The Wollenberg Bunker – Linking East Germany and the USSR

Heading to Berlin or the former GDR? Looking for traces of the Cold War open for a visit?

A Travel Guide to COLD WAR SITES in EAST GERMANY

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The events taking place on the geopolitical stage during the last decade of the Cold War – the 1980s – gave little indication of the imminent collapse of the Soviet-led Eastern Bloc (1989-1991). Correspondingly, looking at the amount of technology developed and deployed in the military field during the late, hi-tech stage of the Cold War, it is easy to notice that opponents on both sides of the Iron Curtain dedicated a significant (and even increasing) budget in preparation for a possible total confrontation. Reading papers and specialized books from the time, the outbreak of an open conflict, such to put a violent and abrupt end to years of opposition between the two opposing systems by recurring to nuclear warfare over the territories of Western Europe (most of them belonging to the NATO alliance, and all being substantially more militarized than today), was not deemed just likely, but more as a matter of time.

The БАРС system – The tropospheric network of the Warsaw Pact

In that era of extreme tension, it is not surprising that one of the most sophisticated and expensive assets developed and deployed jointly by all Nations in the Warsaw Pact, of course led by the USSR, came alive. History would cut its life short though, and as soon as the Warsaw Pact disintegrated, as a result of the opt-out from communist dictatorship of all Countries in Eastern Europe, this asset was decommissioned. This system was the tropospheric communication system ‘БАРС’, a Russian word reading ‘BARS’ and meaning ‘snow leopard’. The name stands as an acronym for four words in Russian, which translate into something like ‘Sheltered autonomous radio communication system’.

The idea put forward by the Soviet top-ranking military staff in the early 1980s (prior to the onset of Gorbachev administration) was that of a system capable of transmitting complex orders (not just simple signals, like for opening a bunker door or silo, but articulated messages) in a safe encrypted way, at a long distance and minimizing the chance of a complete breakdown even in case of an enemy nuclear attack. Despite being not new, the concept of a resilient and reliable system, such to allow exchanging significant amount of data without relying on cables, had been tested in earlier stages of the Cold War only for short-radius operations. Mobile transmitters/receivers, loaded on purpose-designed trucks, allowed for a reduction of the risk of a direct hit from an attacker, and for a quick redeployment in case of need. However, for the amount of data and range required for the coordination of a war scenario, involving many different Countries, and geographically encompassing an entire continent, a different system was required, capable of transmitting more massive data flows on longer distances, with a reduced risk of a sudden or complete interruption.

The БАРС system was based on a certain number of stations, scattered over the territory of the Countries of the Warsaw Pact. Each node was built as a bunkerized, manned military installation, featuring high-power, high-frequency fixed antennas emerging from the ground, and an underground shelter protecting all the technical gear required for manipulating the data to be sent or received, interfacing with the other existing local (i.e. national) networks for military and executive governmental communication, and of course managing the tremendous amount of energy required to pump a long-reaching signal into the ether.

Laying on the front line with the West, hosting a Soviet contingent of some hundred thousands troops (see here and links therein), aircraft (see here), missiles (see here) and nuclear warheads (see here), and being a key-ally of the USSR in case of the outbreak of an open war (at least until late 1989), the German Democratic Republic (or GDR, or DDR in German) was clearly included in the БАРС network from the initial drafting phase. Similarly, Poland, Czechoslovakia, Hungary and Bulgaria, and of course the Soviet Union (which included Belarus and the Baltics, and stretched west to Kaliningrad), all had БАРС stations on their territory. Stations were located at a range of a few hundred miles from one another, thus within the range required for each of them to communicate with one or more of the other nodes. Data (e.g. orders, reports or authorizations) input locally could be relayed along the network through intermediate nodes, down to the intended destination node. There were 26 nodes in total, of which four were in the USSR.

The Wollenberg site – Bunker 301 ‘Tushurka’

The GDR in particular had three stations built, all along the border with Poland, and located east of Berlin – namely Station 301 in Wollenberg, at the same latitude of Berlin, Station 302 in Langsdorf, towards the Baltic coast, and Station 303 in Röhrsdorf (near Königsbruck), not far from Dresden in the southeast of the GDR territory. The first among them, the Wollenberg site (codenamed ‘Tushurka’) could communicate with the other two national stations, as well as with Station 207 in Poland, from where data would be transmitted further down the network, towards the USSR.

The site was built by the GDR state, with technical hardware coming from several Countries within the Warsaw Pact, and most of the military hi-tech components manufactured in the USSR. The actual site (similar to its sister sites) was built in the frame of a highly secretive operation. The staff comprised about 60-70 men, the majority of which were military, where about 15% were civil technicians. Maximum security clearance was required, due to the top-secret nature of the installation and of the overall БАРС system. The bunkerized part of the installation was only a component of the larger premises of the base, camouflaged within the trees on the side of low-rising hill.

As pointed out, the immense spending required for setting up this multi-national hi-tech military communication system, which was extensively tested and completely commissioned (as a network) by 1987, did not save it from a quick demise and disappearance. In particular, Station 301 went definitively offline as early as August 1990.

However, the fate of the Wollenberg site was not so sad as that of many former Soviet or NVA (i.e. the East German Army) installations in the GDR. The high-power antennas were torn down, but except from that, little material damage was inflicted to the buildings and bunker on site. The place was basically shut-off and left dormant, until when a society of technically very competent local enthusiasts started a plan to preserve and open it to visitors, as a memorial specimen of the technology of the Cold War years.

A visit to the Wollenberg bunker site reveals a tremendous deal of interesting details, very uncommon to find elsewhere in the panorama of Cold War relics around Europe. Thanks to a careful preservation and restoration work, the bunker has most of its original systems still plugged to the grid and lit-up – some of them are reportedly still working! Even though the communication networks have been severed, the experience in the bunker is really evoking, and the atmosphere – with all the lit-up cabinets, lights, CCTV cameras, 1980-style screens, etc. – closely resembles that of the bygone era when БАРС was operative!

This report and photographs were taken during a private visit to the bunker, carried out in the Summer of 2023.

Sights

A visit to the the installation in Wollenberg starts from the original high-security access gate. As you may quickly notice when passing through it and getting a first view of the site, the state of preservation is exceptional. Except for the lack of military staff around, everything looks mostly like in the years of operation.

A group of soft-construction service buildings and a reinforced multi-entry garage constitute the first – and visible – nucleus of the installation. All buildings are painted in a camo coat.

A former building for the on-site staff has been turned into a permanent exhibition, with memorabilia items from the Cold War years, when the Nationale Volksarmee (or NVA, the Armed forces of the GDR) cooperated with the Soviet Red Army and the national Armed forces of other Countries in the Warsaw Pact.

A meeting room, now employed also for small gatherings, is especially rich of interesting and diverse items, including emblems, books, memorial plates and pennants, as well as TV screens, hi-fi systems and and beamers from the era.

Another room has been set-up as a control center for the base, with an original console and regional maps.

Compared to military bases (for aircraft or tanks), the Wollenberg installation is rather compact, with a main road giving access to most of the (not many) buildings on site, as well as the bunker. Actually, the bunkerized part was built under a low-rising hill, with the antennas originally standing on top of it. Access to the bunker is possible either by climbing uphill on the main road, or through a suggestive original pedestrian tunnel. The latter starts from within the service building itself, and – somewhat unexpectedly, for an underground installation – it climbs uphill, while keeping beneath the surface of the hill side slope. The lower end is guarded by an original CCTV camera.

At the top end of the tunnel you can find the actual access to the bunker. The design and reinforcement level conferred grade ‘D’ protection according to the military standard in use at the time, with grade ‘A’ being the strongest. Access is through an airlock, constituted by two tight doors at the opposite ends of a small vestibule built in concrete. This design allowed protection from the blast of a nuclear device.

Notably, the locking mechanism of the tight doors is Soviet military standard, which can be found in high-value installations like nuclear depots elsewhere in the Eastern Bloc (see for instance here in Poland, and here in Czechoslovakia).

To the visitor with some experience of Cold War installations, it will be apparent from the very start of the tour that the state of conservation of the bunker, including the systems in it, is exceptional, similar to the rest of the Wollenberg site. The original warning lights and the CC-TV camera for identifying people at the entrance are still in place.

Next to the entrance, a control room with technical gear for checking-in can be found – including original dosimeters for radiation and chemicals, mostly Soviet-made. Looking inside these devices is possible, and reveals a great deal of sophistication in the design and realization of the military-grade material from the time.

Showers and sinks for washing, as well as canister for disposing of contaminated clothes, are located in the same area.

Upon getting access to the sealed area of the bunker and passing by the decontamination facility, you find yourself on the top floor of the underground bunker. The high-technology gear required for the transmission/reception of data on the БАРС network, as well as the interface with other national communication systems, required for receiving data, issuing orders, etc. over the territory of the GDR, were located on this floor.

Two symmetrically placed rooms host two twin transmission centers for the БАРС system. A single manned console can be found in each of them, surrounded by electronic cabinets and switches. At a closer look, all the material herein is Soviet made, and labeled in Russian only.

On the wall ahead of the console station is a set of cables, communicating with the antenna and allowing to set the orientation and monitoring its status.

The actual signals transmitted to the antenna, or received from it, traveled along special hollow ducts, with an almost rectangular section. Bundles of these ducts can be found in the ‘Sender’ (which means ‘transmitter’ in English) room, immediately next to the room where the manned console is.

The modulation and demodulation of the signals going out and coming in respectively through the antenna on top of the bunker required some special pieces of electronics, which included the Soviet-designed KY-374 klystron (codenamed ‘Viola’), a component to be found in the cabinets of the ‘Sender’ room.

Following the hollow ducts, it is possible to find where they finally exit the usually manned part of the bunker, bending into receptacles and leading outside. Piping related to other systems, including air conditioning, can be seen as well crossing or running in the same narrow technical corridors.

Beside the consoles monitoring the antenna and the data flowing through it, a kind of operative room for communication can be found, where consoles allowing to receive and forward data and communication to/from all systems are on display. This largely original room features consoles of different levels of technology.

Original explanatory schemes showing the basic features of the БАРС system are on display in that area – in Russian!

An adjoining room features the cabinets required for making all these system work. The cabinets are really many, with a significant share of material manufactured in the USSR. The sight of all these cabinets together is really impressive, and tangibly provides the feeling of a high technology, sophisticated and expensive design. It compares well, but in a largely up-scaled fashion, to the electronics to be found in some special communication bunkers on the western side of the Iron Curtain (see here).

Interspersed with the original arrangement of the cabinets and consoles are some displays of original material. These include specimens of different types of cables for signal transmission – some of them hollow and pressurized, others featuring impressive bundles of thinner wires – the KY-374 klystron, and other once top-secret core components of the БАРС transmission system. Also on display is one of the few remaining parts of the original system of antennas, once on top of the bunker. The antennas were the only part to be physically torn down when the system was decommissioned, upon the demise of the Warsaw Pact and the end of the Cold War.

The bunker was manned by military and technical staff 24/7. Furthermore, as typical for bunkers from the Cold War era, provision was made at a design level to allow the staff to live isolated within the bunker for an extended period of time, in view of the eventuality to face a nuclear fallout scenario.

On the same floor as the technical rooms, the commander of the station had his own private room. This is still adorned with typical Soviet iconography, as well as everyday material from the age when the bunker was operative.

A small canteen, with a kitchen and a modest living room, can be found at the same level. An original storage room has been employed to gather examples of everyday products, like soap, skin care cream, etc., as well as canned food, cocoa, and beverages of all sorts.

This represents a very rich catalog of now largely defunct and forgotten labels, from the age and regions of the Eastern Bloc (and especially from within the GDR). Also on display are bottles of spirits, likely still very good!

The visit proceeds then to the lower floor, which can be reached through a flight of metal stairs.

The lower floor host the plants required for the regular operation of the entire bunker, such to guarantee operational ability even in case of an enemy attack carried out with nuclear, chemical or biological warfare. The air filtering and conditioning system is very modern. Beside typical filtering drums for particles, to be found also in other bunkers (see for instance Podborsko here), you can see a bulky filtering and climate conditioning system, neatly arranged within two parallel square-shaped ducts. Filtering against chemicals as well as biologic agents was carried out employing special active filters.

Sensors for the level of contamination of the bunker air can be found in different rooms. Much material here is standard Soviet-made.

Systems for water pumping and compressed air can be found as well, including compressors, pumps and reservoirs. Looking at the always interesting factory labels in this area, it is easy to find export products of Bulgaria, Romania and other communist dictatorships of the era. Of course, much hardware is also manufactured in the GDR.

Electricity was supplied from the outside grid, yet capability for self-sustaining in case of a grid loss (for instance in case of war) was implemented as well. Three big German-made Diesel generators have been put in place, and are still in an apparently good condition.

Another example of the high technological standard reached in the late Cold War era is represented by the control room for the plants within the bunker. A manned control station, with a console and a direct view of lit-up cabinets, reporting the status of the various systems running in the bunker, compares well with control rooms of large industrial plants in operation today.

Carefully kept in its original status, with many of the electric links and cabinets still working, the sight of this room is especially evoking.

Also on the lower floor are the sleeping rooms for off-duty staff. Typically, this was not employed except for drills, when the bunker could be sealed to simulate operations in case of the outbreak of hostilities.

Back to the upper floor, it is possible to exit the bunker via a stairway and through a side gate. You will find yourself on top of the low-rise hill where the bunker has been dug. Here the concrete base of the crane where the БАРС antenna used to sit are still visible. Notably, these antennas were much smaller than the tropospheric antennas employed for the TROPOSCATTER system of NATO. This was the result of a different bandwidth employed for transmissions. Therefore, even in the days of operation, the antennas on top of the bunker were not as sizable as those of TROPOSCATTER installations (which were enormous in size).

Looking closely, in the top area of the installation, the duct for supplying the Diesel oil tank of the bunker can be found, similar to sensors for radiation and other atmospheric parameters (similar to what can be found also in other nuclear-proof bases, for instance here). These allowed to monitor the conditions of the outside air, detect an attack and trigger or manage the sealing of the bunker in case of need, by locking all the tight doors.

This access to the bunker is fenced by the original electrified fence, severing this area from the rest of the installation through a further layer of security.

All in all, a visit to the Wollenberg bunker offers an incredible insight in a fascinating and crucial field of warfare – data and communication exchange – as well as a lively and evocative display of a late Cold War hi-tech installation from the Soviet side of the Iron Curtain!

Getting there & Visiting

The German name of the Wollenberg bunker is ‘Militärhistorisches Sonderobjekt 301 Wollenberg’. It can be reached very easily with a car. It can be found in the open countryside along the regional road 158, driving about 35 miles (about 1 hour) northeast from downtown Berlin towards Poland. The exact location is between the small village of Höhenland (~4 miles) and the more sizable Bad Freienwalde (~6 miles). There is a large parking area immediately next to the road, giving direct pedestrian access to the premises of the former military installation. Despite being placed very conveniently, the site is rather elusive when passing by, since it is hidden in the trees and not directly visible from the road. The address corresponding to the place in Google Maps is Sternkrug 4, 16259 Höhenland. The inconspicuous village of Wollenberg, giving the name to the installation, is just nearby, but it is not crossed by the regional road, and it should not be employed for pointing this destination with a nav.

The Wollenberg bunker is a listed historical installation. It is perfectly maintained, privately managed, and it can be regularly accessed with guided tours. These are offered typically one day per week in the summer, or by prior arrangement. Possibly the best option for getting the most out of your visit is getting in contact with the group of very knowledgeable enthusiasts running the place. The official website is here (do not be discouraged by the ‘static’ appearance of the website, they are very active, and they shall typically answer your inquire).

My visit was planned by initiative of Dr. Reiner Helling (see also here), and we visited in a group of three, including the guide (Dr. Michael Schoeneck, a former engineer, with a profound knowledge of any technical aspects related to this installation), which happened to be a perfect option for touring also the narrowest receptacles of the bunker. Visiting in groups too big may be not advisable, since the rooms and corridors are rather narrow, and the place may turn overcrowded for interacting with the guide and for taking good pictures. I think the visit – including the technical content – may be tailored to the needs of the audience. For technical-minded subjects, historians and former military, a visit may take about 2-3 hours (the latter was my experience). In my case, the guide could understand but not speak fluent English, yet Dr. Helling could translate with ease all the explanations. Of course, if you have at least a basic knowledge of German and of the technical material you are looking at, this may simplify your visit, which is in any case highly advisable for those interested in military technology and the Cold War.

Heading to Berlin or the former GDR? Looking for traces of the Cold War open for a visit?

A Travel Guide to COLD WAR SITES in EAST GERMANY

Second Edition - 2024

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STASI Prisons and Headquarters in Berlin and the GDR

Heading to Berlin or the former GDR? Looking for traces of the Cold War open for a visit?

A Travel Guide to COLD WAR SITES in EAST GERMANY

Second Edition - 2024

DON'T LEAVE IT AT HOME! AVAILABLE in PAPERBACK or KINDLE from your national Amazon store!
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Among the most unequivocal signs of the oppressive communist dictatorship in the former German Democratic Republic – ‘GDR’ or ‘DDR’ in German – are probably the many buildings once operated by the STASI, the German cousin of the well-known Soviet KGB.

Being a state security service by its very name – STASI stands for ‘STAat SIcherheit’, or state security -, this organization was responsible for the capillary control over the behavior of the citizens of the GDR, to the aim of counteracting any threat to the communist rule. It was mainly composed of a para-military staff and of an extensive network of informers – so extensive that actually about 1 out of 180 in Eastern Germany worked for the STASI, while by comparison in the USSR 1 out of 595 worked for the KGB. The main goal of this agency was keeping the statu quo, hence any suspect behavior of East-German citizens, deemed subversive with respect to the communist rule, was reported, investigated and usually suppressed.

People found guilty of acts against the State – i.e. against the communist government – were often sentenced to years of imprisonment. This meant that prisons and camps flourished in the GDR, as people got arrested and at least kept for interrogation just for having received western newspapers or having colored their rooms with posters of American pop singers. How the STASI came to know of similar ‘violations’ was by means of informers, who triggered secret investigations carried out with ‘James Bond gear’, like cameras and microphones hidden in coat buttons and bags. Microphones and cameras were also usually installed in the walls, chandeliers and doors of the houses of suspected subjects.

This huge institution was among the most feared and hated – as well as expensive to run – in the GDR, and soon after the reopening of the border and the demolition of the wall in Berlin in 1989 many of its buildings were occupied by the population. To deny responsibility in the unfair trial, imprisonment and confinement of many citizens, the staff of the STASI began ‘burning’ its archives immediately, but they were so extensive that this rapidly turned out to be impossible. The STASI was disbanded among the first governmental agencies of the GDR in the early months of 1990, even before the two halves of Germany were merged. Finally the archives were made publicly available during the process of the German reunification. Many people came to know they had been carefully observed and spied in every movement during their everyday life.

Today, some of the most prominent buildings once operated by the STASI are open to the public and represent an interesting and worrying memento of this chapter of the history of Germany. The following photographs are from some such sites I visited over the years from 2013 to 2023.

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STASI Headquarters, Berlin-Lichtenberg

The headquarters of the STASI occupied an extensive citadel composed of many big, multi-storey buildings. Like the KGB, the tasks of the STASI weren’t limited to internal state security, but also to border protection – a very serious business in Eastern Germany, as you can see from another page of this site dedicated to the German inner border – and espionage activities abroad. The various directorates occupied their respective buildings in the citadel. The place is in a semi-peripheral district of former East Berlin named Lichtenberg.

The main building hosts a museum of central relevance on the topic, where you can find much data about the history and the impressive size of this agency, as well as spy gear – for instance mimetic microphones for listening to conversations in private houses. The stories of some of the victims of the communist surveillance machine are also reported. Envelope-opening devices and rags for preserving the odor of those arrested for watchdogs are displayed in showcases.

Probably the highlight of the museum is the apartment and office of Erich Mielke, the director of the STASI from 1957 – well before the wall was erected in Berlin – up to the dissolution of the GDR. Many original directional offices have been preserved and nowadays can be visited.

The place is very evocative and retains much of the disturbing ‘GDR atmosphere’, typical to this and other similar installations. The number of visitors is much lower than close to Checkpoint Charlie and the DDR museum near the Berliner Dom, which are mostly cheesy tourist attractions with comparatively little content. On the contrary, in this museum you can still easily perceive the commitment of the GDR goverment towards its own survival, and the proportion of the oppressive apparatus that was created to this aim – here you clearly understand the STASI was a serious business and changed the life of many people.

After visiting the museum in the central building you may have a look around to the exterior of other buildings in the citadel, today mostly unused, abandoned or partially occupied by private businesses – I guess the place still retains for many people a very negative aura.

Getting there and moving around

Today the citadel can be reached very conveniently by car or with the U5 (between the stops Magdalenen Strasse and Frankfurter Allee). The museum is fairly modern and well presented, but as of 2015 when I visited the ticket could be paid only cash and some explanations were in German only. Inside the museum there is no air conditioning, and it can be very hot and uncomfortable in summer. Parking is not a problem in front of the main entrance or nearby. Website here.

STASI Prison and Restricted Area, Berlin-Hohenschönhausen

The second largest quarters of the STASI are located in yet another outer district of former East Berlin. Old photographs of the area clearly show that this part of the town was interdicted to visitors not connected with the business of the STASI – there used to be fences and gates all around, cutting some of the roads entering the district. Besides some directorates and administrative buildings, this citadel hosted a prison and a labor camp. The former was the main STASI prison in East Berlin, and those who were arrested on account of suspect activities against the State were usually carried here, where they had to withstand interrogations.

This place is really grim and appalling. It looks like the staff of the prison had just left. Everything from what you see to the smell of the cells, offices and interrogation rooms is totally evocative of the original GDR atmosphere.

The STASI became the owner of the place in 1951, after the Soviets, who had managed the occupied territory directly after the German capitulation in 1945, left control of many administrative functions following the creation of the GDR. Under the Soviet rule, in the years of Stalin between 1945 and 1951, a labor camp was set up here and the main building of the prison – a former canteen for Nazi staff – opened for business. More than 20’000 people passed through this installation between 1945 and 1951, many of them on their way to deportation to the USSR.

Under the control of the STASI, the camp was dedicated to non-political prisoners, where the prison, enlarged in more instances as the STASI citadel was growing up, was for the ‘enemies of the State’. More than 20’000 people were imprisoned here between 1951 and 1990.

The place can be visited only on guided tours, offered on a regular basis also in English. Following the tour you can see various imprisonment cells. The worst – and really inhumane – from the times of the Soviets are in the basement of the main building, with no windows and no ventilation, where many people were crushed together waiting for interrogation or deportation.

The majority of the cells date from the era of the GDR, and are more modern. As the main business of the prison was that of extorting confessions, the prisoners were progressively brought in a state of psychological prostration. Preventing any form of communication was part of the treatment, so most cells for newly arrested people were for one person only. To isolate those arrested even more, when moving from the cell to the interrogation rooms and back the wardens observed special red and green lights, telling when there was somebody else in the corridors. This way the inmate would not see anybody except for the warden and the officer who interrogated him during all his or her stay in the prison.

Padded cells with straitjackets like in asylums were used in the process of extorting confessions, when the inmates were treated with drugs causing hallucinations and loss of physical control. These can be seen in the basement of one of the buildings.

Also visible are some cells with open top for spending half a hour per day in open air.

An interesting item presented in the exhibition is a minivan that was used for taking people quietly to the prison. The appearance and markings are those of a normal cargo van for transporting goods, whereas the interior is structured with micro-cells for arrested people.

Interrogation rooms are aligned on a corridor, and are extremely essential, featuring a shabby furniture. Greasy traces on the wallpaper and the smell of old fake leather heated by the sun is make the original atmosphere come alive.

A further wing is where a clinic for inmates was located. The clinic was of good level, with much technical instrumentation to manage several regular or emergency situations. The office of the director of this wing is another example of pure East German design. Most notably, the once omnipotent Erich Mielke appears to have been interned here following his arrest after 1989.

A one-of-a-kind exhibit is a railway truck for inmates. Besides the rather uncomfortable compartment design, with small chairs in a very little space, this transport was made really inhumane through the lack of air conditioning, the windows with bars and even a white glass, which deliberately created disorientation. These trains were artificially put on the lowest priority, so as to make traveling a painstaking experience for inmates.

The memorial is not central, so only those really interested in the history of the GDR, and of East Berlin and the STASI usually come here. Nonetheless, it is managed like a good level international museum, with guided tours, facilities for groups and a serious bookshop. Before taking the tour you are offered a movie telling the history of the prison in brief and showing the testimonies of former inmates. All in all a very interesting – and instructive – experience, surely worth a detour from the more touristic districts.

After visiting the prison, you may have a look around to the other buildings in this citadel. You can find a map in a cheap but interesting booklet they sell in the bookshop (‘The prohibited district’, by Erler and Knabe).

Getting there and moving around

The correct address of the prison building is Genslerstraße 66, Berlin. You can reach it easily by car. The neighborhood is primarily residential and not central, so parking won’t be a problem. If you have not a car, you can arrive conveniently with the tram line M5 from the most central districts. The correct stop is Werneuchener Strasse, and from there it’s about 0.4 miles to the gate of the prison. Website here.

STASI Prison Lindenstrasse, Potsdam

Behind an elegant façade like many others you can find in central Potsdam there is a prison comparable in size to the ‘main’ prison in Berlin Hohenschönhausen described above, and mostly unknown to the general public crowding this small and beautiful historical town.

This building was used as a prison by the Kaiser, the Nazis, the Soviets and finally the GDR. It was renovated and modified in many stages during its long history, and during WWII under the Nazi rule, some sections of the courthouse in central Berlin were transferred here, when the original buildings of the Nazi courthouse got damaged as a result of Allied air raids.

Differently from Hohenschönhausen, the prison in Potsdam is not part of a ‘citadel’, even though the KGB headquarters in the GDR were not far – actually they can be found close to Schloss Cecilienhof, Potsdam, now partly converted to luxury apartments and villas.

Another difference with respect to Hohenschönhausen is the style of the building, which dates back to older times. This is reflected in the plan and in many details of the construction, which at least from the exterior is very elegant.

Inside you can find Soviet cells in the basement – also here the most inhumane – and other cells packed along narrow corridors on several floors. In the inner courtyard there is a central block of open top cells for ‘recreation’, and traces of the original cameras and surveillance systems.

Something you may appreciate is the fact that you can visit the place on your own. Paneling with data or telling the stories of former inmates are totally in German, but you are given a leaflet with explanations and a map of the place at the entrance. Also a few original interrogation rooms have been preserved and can be seen.

The entry price is very reduced, so visiting is of course a must for the committed tourist, and interesting also for the general public. The place is ‘mimetic’ and not much advertised, so you won’t find the usual flocks of visitors, unlike the royal estates in Potsdam… Much recommended.

Getting there and moving around

The precise address is Lindenstrasse 54, Potsdam. It is in central Potsdam, so you may park at your convenience for visiting the district and have a stop there if you like. Similarly, if you are coming with the public transport system just go to the central district and walk to the place. Website here.

STASI Pre-Trial Prison, Rostock

Similarly to the prison in Potsdam, the anonymity of the façade of this building in central Rostock, placed to the back of a section of the courthouse still working today, is really deceiving. A prison capable of hosting more than 100 inmates can be reached today via a small door leading mainly to the offices of the faculty of the local university. Once inside the building you will notice a worrying fence on the side of the stairs going to the first floor, where you can get access to the prison.

Besides the many cells, it is possible to find a very interesting exhibition on the history of the GDR and of the STASI, with much data and stories from the time. Also many artifacts can be found, like spy gear, rags for preserving the odor of inmates for watchdogs to make capture easier, state bonds used to pay informers, and more.

The main function of the prison was that of keeping those arrested for interrogation until they were sentenced. More than 4000 people spent some time in this prison, mainly for ideological crimes, in the years of the GDR.

The place can be visited for free with an audio guide also in English. Some parts, including the open-top cells outside and the rigor cells in the basement can be visited only in a guided tour – as far as I understood, these are offered in German only.

On the top floor you can see an interesting exhibition on people who escaped or tried to flee the GDR by sea.

Getting there and moving around

Centrally located in Rostock – a lively city on the coast of the Baltic Sea – at a walking distance from Rosengarten. If you are moving by car, you can park on Hermannstrasse, and reach the door to the back of the courthouse block (opposite a small market). The door is heavy, so press it hard, it may be open even if it looks closed. Website here.

STASI Maximum Security Prison ‘Bautzen II’, Bautzen

Originally designed as a pre-trial and short-term court jail by the local government, the prison of Bautzen II was erected under the Kaiser to the back of the courthouse in the homonym town in the southeastern corner of Saxony, today very close to the border with both Poland and the Czech Republic. A larger penitentiary, named Bautzen I and originally conceived as a juvenile jail, was built around the same time in town.

With the advent of the Nazi dictatorship, both facilities began to be exploited for the prosecution of political dissidents, or to isolate elements of ‘inferior races’. Violence, intimidation and extorted confessions began to be the rule. Both branches of the prison of Bautzen fell under Stalin’s control at the end of WWII, and this corresponded to an exceptional increase in the number of inmates, which included a substantial share of former Nazi staff and opponents of the Soviet regime.

After the creation of the GDR, the facilities in Bautzen went on working as primary centers for the confinement of political prisoners, together making for possibly the largest detention center in the country. The smaller jail of Bautzen II, with slightly more than 200 single cells, was turned into a maximum security prison intended for the most dangerous ‘subversive elements’ of the whole state. While Bautzen I is still an active state prison of todays Federal Germany, Bautzen II has been opened to the public as a memorial.

The dreary access from outside is through three gates, and this adds to the perception of the place as really ‘no hope’.

Similarly to the prison in Potsdam (see above), Bautzen II can be toured on a self-guided basis, without a group. Most parts of the prison are opened, and several cells can be accessed.

Some of the cells retain the original furniture, even shabbier than the usual communist standard. The metal staircase in the middle of the prison building allows to better appreciate the size.

Besides rigor cells with additional bars and an incredibly small walkable area, some groups of cells are separated from others, with armored doors splitting the corridors in contiguous isolated sections. This was possibly a special feature of this maximum security prison. You can experience an unreal silence when sitting in a cell closing both the doors of the corridor and of the cell.

There are also some ‘common areas’ for inmates to work and stay, and an external courtyard divided in sectors, to allow inmates to spend some time open air, but without the chance to meet or see each other.

Getting there and moving around

The prison of Bautzen II is open as a national monument, a website with full information about visiting is here. I noticed that there are descriptions in German only throughout the prison, so you would better go prepared at least on the history of the place – starting for instance from the website – to get the most from your visit. The location is Waigangstrasse 8a, which is behind the courthouse of Bautzen, 0.8 miles to the east of the historical town center, conveniently reachable walking from the railway station and also by car. The area around the courthouse is mainly residential and parking can be found easily. Bautzen I is still today an active regular detention facility and cannot be visited.

A vital center of the Sorbs, an etnic group of Saxony and Brandenburg recognized by the German Federal Government, the town of Bautzen is nice to visit and rich of historical content. It is about 45 miles east of Dresden, and bolsters a picturesque, perfectly refurbished town center with medieval to baroque architectural elements.

STASI Headquarters, Dresden

The STASI headquarters and prison in Dresden have been developed starting 1945, originally as a prison for the Soviet NKVD (later KGB), on the premises of a former factory not far from the river Elbe and the historical district of the town – which would lay destroyed for decades following air raids in WWII. Similar to the prison in Lindenstrasse, Potsdam (see above), the underground floor of the former factory building was turned into a prison, with provision for a number of very basic cells typical to Stalin’s era, aligned on a narrow corridor.

Until the facility was handed over to the newly-formed GDR in 1952, the Soviets interned here mostly German citizens accused of cooperation with the defunct Nazi regime, as well as subversive elements, unfriendly with the Soviet controlling forces. As usual within a dictatorship, indictment was largely arbitrary and sentences extremely harsh – following arrest, most people were deported to forced labor camps of the Gulag system in the USSR, some were brought to Moscow to be hanged, and many were sent to provisional camps established in the ‘Soviet occupation zone’, later to become the territory of the GDR.

In this part of the exhibition it is possible to step in most of the cells, very small and essential.

A room is dedicated to the Gulag system, whereas another is a memorial for those taken to the Dresden prison and who reportedly did not survive the ordeal of the Soviet detention system, or where sentenced to death on the base of political reasons.

Also visible are some service rooms, like the bathrooms and rooms for the guards.

Along the corridor an emergency cable could be pressed by the guards at any time when in distress, triggering an alarm. From this part of the prison it was possible to access a inner courtyard.

Concurrently with the handing-over to the STASI, the facility was expanded, with offices and a modern multi-storey prison building.

Access for those arrested was via an inconspicuous wooden gate. An apparently innocent cargo van was employed for arrests. It can be checked out and it reveals provision for several segregated micro-cells inside. Once disembarked from the van, some prisoners may have had to wait for the prison check-in process inside mini-cells. Temperature in this area used to be – and still is – terribly hot in the summer.

Once inside, prisoners had to undress and undergo an accurate inspection in the check-in room. They were photographed for records in a special room, where they sat on a chair which was moved by the camera operator to obtain portraits at specific angles. Then prisoners were assigned dresses and slippers for their stay.

This prison acted as a remand (i.e. pre-trial) prison, with 44 cells on 4 levels.

Cells were for one, two or three people. Single cells were not customary from the 1970s on, except for rigor cells.

An example of the latter can be seen, with a small chair bolted to the ground and no windows. A special cell was that for writing letters, something that was possible only at prescribed intervals (e.g. once per week) and in this special room – obviously, all communications were checked and censored by the STASI. This cell features a small table, a chair, and a lavatory.

An uncommonly ‘comfortable’ cell was employed for foreign prisoners, who included those who had tried to help GDR citizens in their escape attempt, and who for some reason had got caught by the STASI. These cells had a window allowing a view of the sky – not possible through the special windows of regular cells – and a larger iron bed, instead of a narrow wooden berth.

Separated boxes in a walled courtyard outside were employed for letting the prisoners spend some minutes per day in the open air.

Walking the prison building you may notice that most of it is still original, including the purely-GDR linoleum floor, and the alarm system. The heavy curtains make the building dark and oppressing. The temperature in the summer is also very hot. The building is very silent, much resembling the original asylum-like feeling.

A routine operation in a remand prison was interrogation of the prisoners. Prisoners were insistently interrogated by STASI staff before formalizing an indictment. For the purpose, they were taken to the top floor of the building, along a few flights of stairs, up to the the interrogation rooms. Interestingly, the door giving access to this ‘bureaucratic’ part of the facility still bear seals (now reopened), put in the days of the revolution following the demolition of the wall in Berlin in 1989. The offices of the STASI, with material and archives, were sealed for criminal investigation.

Today, in this area a few original relics from the STASI operations can be found, like photographic film, nominal folders, stamps, keys, etc.

One interrogation room is still visible, whereas many others have been converted and are today employed for thematic workshops by the organization running the memorial.

As of 2023, the memorial is undergoing restoration, with the reopening of a larger part of the offices planned soon. Momentarily, it is possible to see the original grand auditorium of the STASI, a full-scale theater, with a typical GDR decor and even an original audiovisual apparatus. It is hard to imagine what kind of people could attend some symposium in an elegant room like this, just 50 ft away from prisoners confined in cells, non-criminals confined mostly only because suspected of having some arbitrarily-defined ‘subversive ideas’.

The quarters of the old NKVD prison are linked to the more modern prison building by a long underground corridor.

Getting there and moving around

The former STASI headquarter in Dresden is run as a memorial by a very active society, supported by various preservation bodies and associations. A professional website with much information, including a leaflet with a description of your visit in English, can be found here. A visit may easily take 1.5-2 hours for an interested subject. Many parts of the facility are accurately preserved and make for a very evocative memento. Furthermore, permanent and temporary exhibitions add to the experience and documentary value.

Visiting is possible on a self-guided basis, with explanatory booklets in many languages including English lent for the duration of your visit.

The memorial is located northeast of the historical district of Dresden, right on the northern bank of the river Elbe. The exact address is Bautzner Straße 112a, 01099 Dresden. However, access by car to the inside parking is possible only at these coordinates, (51.06688926262786, 13.782718227181237). Since access is from a major road where a U-turn is impossible, and the entrance to the parking is somewhat ahead of the official address, it is worth employing these coordinates for your nav, otherwise you might be missing the entrance to the parking, being forced to a pretty long tour of ‘one ways’ and ‘no turns’ before you get back to your intended destination.

Memorial ‘In der Runden Ecke’ – STASI Headquarters, Leipzig

Similar to its cousin in Berlin-Lichtenberg, the former headquarters of the STASI in Leipzig has been opened as a memorial. In this case, the building was not made on purpose, but converted from a pre-existing one. A decorated, elegant palace in the city center was chosen for the local brain of the repressive apparatus. The building features an angled facade, since the name ‘on the round corner’ – ‘in der Runden Ecke’ in German.

The entrance hall to the former headquarters has retained much of its original appearance.

The main part of the exhibition is immediately reached through the original reception office, which has been left willingly untouched since the pre-1989 era – including now dead CC-cameras, and two elaborated majolica murals with emblems of the STASI and some decorations.

The exhibition takes the ground floor of a wing of the building, i.e. only a small part of the original site. The office of a clerk has been mothballed preserving at most its original, shabby appearance, with a portrait of Honecker.

In an adjacent room, many rigs for covert mail and communication interception and inspection activities are displayed. These range from steam-pumping envelope openers, to fake postal stamps from Federal Germany, or even from abroad (to send false communications), and even fancier machines for reproducing signatures, looking inside parcels, etc. – every design betraying a really paranoid attention to details, and a true waste of exceptional engineering abilities.

A complete cell and photo studio – for mugshots – from the now demolished STASI prison in Leipzig has been spared for this exhibition, not much dissimilar from others on this web page (see above).

More artifacts on display include audio and image gathering stuff, ranging from micro cameras and recorders, to exceptionally compact, high-precision zoom lenses. Archived rags with the smell of repression victims in case of escape – for dogs – are another specimen from the STASI crazy inventory.

A room is devoted to the STASI huge paper archive, and to the silly, titanic effort to destroy the evidence of years of illegal spying activity as quick as possible, following the re-opening of the border. The solidified slime obtained from paper fragments is on display. Some very evocative pictures show the immense Leipzig archive and its conspicuous remains after the destruction attempt.

Two more rooms tell about the immediate post-WWII history in Leipzig, with pictures from 1945 with Nazi officials who committed suicide, as well as from the first stage of Allied occupation and Soviet administration – before the GDR was founded.

An interesting collection of artifacts concerning the Soviet-GDR friendship and alliance is really evocative of a luckily bygone era.

Finally, the corridor is full of interesting pictures, telling about the disinformation role of the STASI, border patrolling, and many other businesses this overpowered criminal organization was in charge of.

The building is today also seat for an agency managing the old STASI archive for historical purposes. Furthermore, the first floor and the elegant stairs leading to the top can be toured, with some display cases showing attractive Soviet-era artifacts.

The first floor in particular must have been an official meeting/reception area, or a director’s office. Part of the original furniture is still there, including a mural with the head of Dzerzhinsky, the founder of the Soviet Ceka back in Lenin’s time, and an inspirational figure for all fanatics of ‘state security’ in the communist world – an activity which was a synonym for violent prosecution of free will.

Getting there and moving around

The memorial is on the border of the pedestrian area in Leipzig city center. It is modestly publicized, but thanks to its accessibility, it might be easily included in a standard visit to historical Leipzig, and it is significantly populated by tourists. Entrance is free of charge, and its professional website is here. Despite the small size, for an interested subject visiting might take 2 hours or more. Free pictures are allowed, and an audio guide in English allows to get much from the visit even for people not speaking German.

STASI Bunker, Machern

The bunker in Machern is an underground facility built for the STASI in 1968-72 as an emergency headquarter, for keeping the chain of command and coordinate operations in case of a potential crisis. It represents a specimen of the level of commitment of the GDR government with respect to the preservation of control, and a witness of the huge budget made available to this particular ministry, inextricably linked to the government itself and pivotal in the survival of the oppressive GDR communist regime over its entire life span.

The crisis in Prague in 1968 possibly triggered the build up of a similar underground network by the STASI, which customarily operated in secrecy. The very existence of the bunker, located some 30 minutes driving from central Leipzig, was unknown to most. The inconspicuous visible part of the facility was deceived in one of the lots in a district of free-time homes for employees of a public company. It was discovered only following the 1989 revolution and the abolition of the STASI.

Compared to underground military installations, either of the NVA or the Red Army, the bunker is rather compact. However, it had provisions for about 100 staff in case of crisis, with a moderate ability to resist military-level attacks, including facing a nuclear war scenario.

The visit starts by accessing the grounds, where an unassuming little country villa of the GDR can be found, which acts as a check-in point, and as a ticket office.

Soon you may notice the presence of unusual gear on the premises. These include houses and training gear for dogs, cables for allowing leashed watchdogs along a pre-assigned watch pattern, a concrete sentry box, fire extinguishing gear, piles of fuel barrels, a deck for repairing vehicles, and a rather big grey hangar.

The latter hides the blast-proof double entrance to the underground bunker. Before stepping in however, it is possible to check out an impressive amount of spare parts aligned on shelves, with literally tons of interesting military-grade material – most of them clearly marked as Soviet manufacture. Many mystery boxes with writing in Russian can be seen. Rolls of barbed wire, metal nets, camo blankets, and other material for sealing and deception can be seen together with more technical material, including technical instrumentation.

A small collection of memorabilia from the STASI years is shown on site, as well as a permanent exhibition with technical schemes and organization details.

Access to the underground bunker is via a horizontal armored door and through a long flight of stairs. An airlock with two tight doors was installed for making the place blast-proof and seal it in case of nuclear attack.

Dosimeters and showers for decontamination can be found close to the entrances – there are two of them, both inside the same hangar.

The bunker was mainly intended as an intelligence center for crisis management. The flow information was guaranteed by a number of communication systems and facilities. Manned stations can still be seen in a number.

Beside communication facilities, the bunker features sleeping quarters for the STASI staff, a kitchen/canteen area, and a few offices and private quarters for the decision-makers – senior STASI officers. These offices offer a reasonable level of comfort, typical to the the bunkers from the era (see for instance Kossa and the Polish headquarters near Wolin, but a similar level of comfort could be encountered also on the western side of the Iron Curtain, like here in Britain).

The bunker is built mainly around a square corridor, with an array of long and narrow rooms, each dedicated to a specific function.

Soviet material can be found everywhere, including air filters and heaters.

Different from the previous sites bound to the grim and disturbing history of the STASI and of the communist-led repression in the GDR, this bunker offers an interesting perspective into the para-military domestic activity of this former backbone of the single-party government of that country.

Getting there and moving around

The STASI bunker-museum in Machern is a branch of the STASI memorial in Leipzig (see above).  An updated web page on this bunker can be found in the German version of the website of the Leipzig memorial (here), with updated information on the planned dates for a visit. The bunker is regularly open only on a few dates over the year, which are published in advance.

The visit allows to access the grounds, where explanatory panels are available in German, as well as the storage hangar and bunker. In the hangar, visitors are offered a short introductory video (in German). Afterwards, it is possible to visit the hangar and the bunker on a self-guided basis. Reservation is not required, but access is regulated on site by gathering visitors to form small groups, who are admitted to the bunker one by one to avoid overcrowding. Time in the bunker is more than enough to check-out the items on display, taking all the pictures. In all, a visit to this installation may take about 1 hour once on site.

Please note that they accept only cash for the ticket.

The location is in the countryside, about 10 miles northeast of Leipzig along the road B6. It is easy to reach only with a car or similar. There is a large parking there (51.376119908957726, 12.633996194227596), also serving the nature recreation area around. The entrance to the bunker can be reached from the parking with a .5 miles walk along a local road here (51.37857212168658, 12.644452664748663). No parking is possible on that road. Please note that the position corresponding to the bunker marked on Google Maps is largely inaccurate.

The bunker is located very close to the former Soviet base of Brandis/Waldpolenz (see here).

KGB Prison and Headquarters, Potsdam

This memorial is strictly speaking an outlier in this chapter, since it was never a STASI facility. Since their arrival in late April 1945, the Soviets installed a major intelligence and counter-intelligence center in Potsdam. An entire district was severed from the rest of this fashionable imperial town – which had fallen in the hands of the Soviets and later in the GDR. Its perimeter was fenced, the area provided with a guarded gate, and interdicted to everybody except authorized Soviet staff.

In it there were residential buildings, as well as central offices of the secret intelligence and security services of the Soviet Union in the heart of the GDR, and immediately on the border with West Berlin.

Today this exclusive residential area has been returned to its original function, except for a memorial, which has been prepared in the former prison originally built by the Soviets in a pre-existing, relatively little and unassuming building.

The Soviet secret services employed the prison from 1945 to the early 1950s as a remand prison for former Nazi collaborators, but also for German citizens considered dangerous or unreliable for the Soviet system. They were typically sentenced to years of forced labors and deported to the Gulag systems. When the STASI was created and took over the surveillance of GDR citizens, this prison was employed primarily for Soviet citizens considered as dissidents, including military staff. It is estimated that the Soviet population in the GDR totalled half million people in the late 1980s, therefore surveillance was not an easy task for the Soviets, requiring a dedicate apparatus with its own facilities.

The citadel and the prison in it went on operating until 1994, among the latest facilities to be relinquished by the then-Russian government.

The largely arbitrary indictment and sentencing of German citizens interned in this prison by the inhumane bureaucratic Soviet government of the years of Stalin indeed made many victims. Therefore, this place is primarily a memorial.

The shabbiness of the entire construction, typical to Soviet KGB prisons (see for instance here) is really striking. The visits starts on the first floor, where a number of cells can be seen. A rigor cell can be recognized by the lack of any light or ventilation. The ground was typically flooded with cold water, and the walls are covered in rough plaster, so that the prisoner could not sit on the ground nor lean against the wall.

On the top floor, former interrogation rooms today host a very interesting exhibition, with rich and detailed information in multiple languages including Russian and English. They cover the activity of Soviet secret services in the ‘Soviet occupation zone’, and later in the GDR and the Soviet enclaves in it. The brutal treatment reserved to many Germans, typically in the immediate post-WWII years under Stalin’s rule, is witnessed through striking documents, accounts and photographs. Among those sentenced to death were even schoolboys who did not want to learn Russian.

A focus is put on the structure of the law system of the communist dictatorship in the USSR, as well as on the mechanism of interrogations – including accounts of Soviet defectors.

Original memorabilia from the place include coats, special armbands for the staff authorized to enter the citadel, as well as original documents from the various ages of operation of the place.

In the basement are group cells intended for many people on their way to deportation. Graffiti from inmates can still be seen in the plaster.

A rigor cell which did not allow standing is also part of the exhibition.

A memorial to the victims of Soviet hardship has been installed on a side wall, whereas a modern visitor center completes the exhibition.

A thematic walk in the former Soviet citadel highlights through explanatory panels the original function of some of these buildings. Now returned to their original imperial splendor, they carry unsuspected grim memories of the communist era. Among the most notable features is the relic of a former small monument. Looking carefully, some of the houses still bear numbers on the facade according to the Soviet-style numbering of town blocks.

Getting there and moving around

The memorial is called Gedenk‑ und Begegnungsstätte Leistikowstraße Potsdam, and its professionally-run website is here. The address is Leistikowstraße 1 – 14469 Potsdam. Many parking opportunities on site. Reaching is easy also with public transport from Berlin. The prison is very close to the Cecilienhof palace.

The visit is on a self-guided basis, with much information available through the website, including options for smartphone-guided tour to the prison and to the former citadel. The permanent exhibition (in many languages) is rich and interesting, a detailed visit to the prison and exhibition may take up to 1 hour 15 minutes. A walk in the former Soviet citadel, today very enjoyable, may add 30-40 minutes for the more committed visitor.