Cold War Forts and Museums in Denmark

During the Cold War the condition of Denmark on the international stage was among the most complex. Coming from years of neutrality before WWII, conquered in a matter of days in spring 1940 by neighbor Germany, at that time in the throes of the Nazi fury, it found itself on the front line of the two opposing blocs soon after May 1945.

Having not been occupied by the Soviets during WWII, it could better choose about its future, and in 1949 the mother country of the Vikings joined NATO as a funding member – unlike neighbor Sweden and Finland – thus giving its availability to its Allies to help countering Soviet influence over the territory under its control.

History in brief

Often overlooked when looking at the world map for its relatively small area, at the beginning of the Cold War the geographical position of Denmark nonetheless was – and, to some extent, still is – strategically very relevant. It is right on the inlet of the Baltic Sea, with a proximity to the foreign coasts of Norway and Sweden such to allow easily blocking the marine traffic on the Kattegat strait, when needed, by means of mere cannon fire from the coast. During the Cold War, this meant a virtual control over a sea where the USSR and Eastern Bloc Countries had many industrially relevant and non-freezing ports, as well as navy bases. Furthermore, the islands of Denmark, where large cities like Odense and Copenhagen are, can be found as close as 1.5 hours by boat to the coast of the German Democratic Republic – once one of the most heavily militarized countries on earth, also thanks to a massive Soviet presence. The smaller island of Bornholm, further east, is even closer than that to the coast of Poland.

A curious fact in history demonstrated the proximity of Denmark to the communist sphere of influence, shaking the minds of top ranking Soviet military. On March 5th, 1953, on the very same day of Stalin’s death, the first defection of a jet fighter from the Eastern Bloc took place, when a Polish MiG-15 on a routine flight along the Baltic Coast suddenly left his mates and rushed to Bornholm, where it landed on a field, leaving the aircraft in almost pristine conditions.

The cautious reaction of the Danish government and military forces reflects the position of the country at the time – they had identified the USSR and their satellites as a clear and present threat, and consequently they had taken the side of the West. Yet Denmark knew it could not withstand a direct military hit by the Soviets for more than a few hours, therefore as a form of self-protection, any form of provocation, at least in the early 1950s, was carefully avoided. While the pilot of the MiG was allowed to escape to the UK and then the US, the aircraft was quietly ceded to the US military for technical inspection in the FRG, but then re-mounted and returned to Poland. Other examples of a policy of constant detente with the Soviet Union are represented by the refusal to have NATO bases on its territory, or despite the adoption of the Nike missile system for the airspace protection, the missed deployment of the corresponding tactical nuclear warheads.

Of course, in recognition of the strategic relevance of this pleasant country, plans for a Soviet invasion which would strike in northern Europe, with the objective of reaching to the ports of the North Sea in less than a week from Eastern Germany, included as a major target the quick occupation of the Jutland peninsula, and of the islands of Denmark as well. This had to be done by marching fast through the northern regions of the Federal Republic of Germany, and simultaneously landing troops on the Danish islands.

About this post

Albeit not enough populated to sustain an army capable of resisting the eastern opponents on the other side of the Iron Curtain, thanks to its position on the map, Denmark took over seriously a fundamental border monitoring and interdiction task in favor of all NATO forces. Two tangible witnesses of this are the military bases of Stevnsfort and Langelandsfort, both located on the southern coasts of the islands, overlooking key sea straits, and pointing south to the East German coast. Both have been shut down after the end of the Cold War, and now they can be visited as top-tier military museums.

Further souvenirs from the Cold War era can be found in the Defense and Garrison Museum in Aalborg, a wide-spectrum military museum with a focus on WWII and the Cold War, and in the Danish Museum of Flight, where exemplars from the heterogeneous wings of the Danish Air Force are displayed, together with unique specimens of Danish aircraft production from the inter-war and early Cold War period.

This post covers all these four sites, visited in summer 2019. Presentation doesn’t follow any special order.

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Sights

Cold War Museum Stevnsfort

This museum on the eastern coast of the island of Zealand (the same of Copenhagen) is actually a former Cold War military fort, operative from the early 1950s to the year 2000. It was re-opened as a museum in 2008, carefully preserved in most part in the forms it had in the 1980s, the most technologically advanced years of the Cold War.

By the entrance to the museum area you can see three surface-to-air missile, namely an old Nike-Ajax, and a much more performing – and bigger – Nike-Hercules. Both were part of the US Nike airspace protection system, which was deployed in Denmark around Copenhagen. The missiles are from the Cold War years, but were not originally present on Stevnsfort.

Strictly speaking, Stevnsfort is not the part of the installation you access first. The area you meet when getting in from the parking used to be a missile base in charge of the Danish Air Force. It was built for the Hawk system, another US interdiction surface-to-air missile system, the heir of the Nike system. Actually, Nike Hercules batteries in Denmark were withdrawn from use – as elsewhere, see this post – in the 1980s. Their role was taken over by Hawk missile batteries, gradually entering service since the 1960s, and operated till 2005 in Denmark.

Differently from its predecessor, the radar-based Hawk system was entirely movable, making it more flexible and less vulnerable. As a result, there are basically no bunkers in this area, and all constructions here are ‘soft’. Target designation and tracking was demanded to three sub-systems, namely a radar-pulse antenna for target individuation, an interrogation friend-or-foe (IFF) and a target-tracking/homing antenna.

Two radar-pulse antennas are displayed. The aerial emerges from a tent, which covers the electronics and motor of the system. Both are mounted on a truck trailer, which is actually totally movable. The range of the radar scanner was about 75 miles.

The IFF antenna is a smaller barrel-shaped device coupled with systems on-board aircraft, needed to distinguish between an enemy aircraft and a friend or ally. The target-tracking/homing antenna, with its distinctive two radar dishes, shares the installation setup with radar-pulse antennas – it sits on top of a trailer, covered in a green tent.

Close by, trucks and special moving cranes to mount the missiles on their launch gantries are displayed. Also containers for the missiles are shown, together with an example of the Hawk missile itself. The launch order could arrive only from the central Air Force command, except in case of a communication breakdown, when each missile base could decide on its own – at the high risk of making a mistake!

Farther on, power trucks and other launch systems are displayed besides batteries of Hawk missiles. The launch gantry is smaller in size compared to that of Nike-Hercules, but each gantry launches three missiles instead of only one. The gantry is anchored to the ground, and when inactive it is shrouded in a peculiar rubber-coated eyelid-like bubble, which can be quickly lowered to let the missiles out.

On the far end of the missile area, you can see an old-fashioned coastal cannon, part of the original fort, used as an illumination cannon in support of larger cannons in the battery.

One of the naval gun batteries is the first item you meet when entering the actual Stevnsfort fort. The fort was built between 1952 and 1955 for use by the Navy, and is the oldest part of the installation. Together with the Langelandsfort gun battery and command post (see below), it was tasked with monitoring marine traffic along the straits giving access to the Kattegat and the North Sea from the inner Baltic. For the purpose, it was supplied with a huge underground bunker, its most distinctive feature, as well as batteries of naval guns.

The 150 mm guns have an intriguing history. They were made in Nazi Germany early during WWII, for the Kriegsmarine ship ‘Gneisenau’. This was damaged when still in the dockyard, and the guns were re-designated to be placed on the Danish island of Fano on the North Sea coast, as part of the fortifications of the Atlantic Wall. Following the end of WWII in May 1945, the guns were captured and finally found their way to Stevnsfort.

The two-guns batteries were capable of 4-6 shells per minute per barrel, and could reach to the coast of Sweden, thus effectively closing the Oresund strait between Denmark and Sweden if needed. While primarily an anti-ship battery, the swiveling turret could be used to cover the coast, in case of an amphibious attack.

Firing direction was by means of a primary radar station on site, which is still in use, complemented by five other stations along the coast. The shells were loaded with an elevator from the bunker underneath. The guns were temporarily deactivated – but not dismantled – in the 1980s, when Stevnsfort assumed the role of main control and communication post for the southern district of the Danish Navy. Joint exercises with the military forces of the FRG were carried out also here in the final years of the Cold War.

By the entrance to the underground bunker you can spot several air hatches emerging from the ground, and an example of sea mine. The latter was the primary weapon to interdict traffic on the strait, with gun battery fire being mainly directed against enemy mine-sweepers.

Past the entrance, you need to descend a long stair into the bunker. At the base of the stair is an airlock with facilities for decontamination. The Stevnsfort bunker was most notably the first structure in Denmark to be built to withstand a nuclear attack.

The bunker is not excessively big, with about twenty reinforced-concrete-padded rooms connected by tunnels carved in the rock.

One of the highlights of this installation is the communication bunker, operative since 1984 in an area formerly hosting a hospital, then shut down when the naval batteries were deactivated. This used to be a highly inaccessible facility during the Cold War. Thanks to a careful preservation, the room looks like it was still in use! Batteries of telex and other communication machines originally in place, monitors and modern imaging technology from the Eighties, together with examples of ciphered messages are all on display.

Next to the communication room, the operation room is even more impressive. Similar to the former, it was constantly manned, and totally inaccessible for non-authorized personnel. The radar monitors can be seen towering over the consoles! Military staff on duty identified and followed all marine traffic in the assigned district, both civilian and military, friends and potential enemies.

Catalogs of existing ships are on display. Several thousands ships were identified and observed from this facility in the days of operation. It is reported that patrol ships from the USSR approached the coast under surveillance about 30 times per year, tasked with familiarizing troops with local geography…

Another highlight of the visit is the ammo storage for the gun battery previously visited. In the storage, explosive cartridges are placed separately from the shells themselves. There were four types of shells, recognized through a color code – grey for armor-piercing, orange for explosive, green for illuminating and blue for inert.

The almost-100 pounds cartridges were loaded on an elevator, and lifted up to the battery. A ladder provided direct access from the bunker to the cannons, serving also as an emergency exit.

Other rooms you can visit are sleeping quarters for the 250 men which stationed inside the bunker, until the guns were deactivated in 1981. The fort was capable of sustaining prolonged isolation in case of crisis or war. During the Cuban missile crisis, the Stevnsfort bunker was put on maximum alert for a week, with all men living underground, all accesses sealed.

Getting there and moving around

The Cold War Museum Stevnsfort is an international-level museum, to be found 1 hour driving south of central Copenhagen. The official website with directions and opening times is here. Visiting inside the gun battery and the bunker is possible only on a guided tour, where you are given an audio guide in English (also German and possibly other languages) if you can’t follow the Danish-speaking human guide. The guided tour includes also a visit of the missile battery, but this part can be toured also on your own. The guided visit lasts about 1.5 hours, and may turn a little boring in some parts (as usual, the human guide speaks longer than your audio-guide), but it is needed to get access to the most unique parts of the museum. I suggest visiting relatively early in the day, allowing some spare time after the guided tour and before closure to tour the missile part on your own. Free parking ahead of the installation, nice military-themed shop.

Cold War Museum Langelandsfort

This museum has been opened on the premises of a former naval gun installation from the same years of Stevnsfort (see above). Located on the southern island of Langeland, at the inlet of the Belt channel giving access to the Kattegat from the Baltic, it was in a good position to monitor all marine traffic in its sector, as well as for blocking the channel. As a matter of fact, similarly to Stevnsfort, the main target of the naval guns here were minesweepers, for the channel was completely covered with Danish remotely-controlled sea mines, and action of enemy minesweepers would have been necessary before any attack by the bulk of navy forces.

The main naval force in Langelandsfort was constituted of four naval guns, mounted on swiveling turrets, and a fire control bunker which in non-crisis time was used to keep trace of all marine traffic in the sector. The fort was complemented with anti-aircraft defensive positions, a bunkerized power station, and ‘softer buildings’, including barracks. Except for the latter, everything has been restored and can be visited. One of the naval batteries has been restored completely to its original form including the mechanisms underneath, whereas at the base of the other three batteries you can find exhibitions about various aspects of the Cold War – they are all pretty well studied, rich and interesting.

The command bunker is the first construction you meet. The building is from the 1950s, and it shares many aspects with Stevnsfort, though this is much smaller. You can see sleeping quarters and a kitchen, which would be used especially in case the fort was sealed, i.e. in case of high alert or war.

The control rooms are three. Two are for tracking marine traffic in the marine district of the Belt, and also for coordinating air operations from other military installations in Denmark. A radar antenna and an observation tower outside, likely complemented by similar gear in the area, provided a complete real-time picture of the civilian and military traffic in the sector. It is reported that ships going to Cuba with SS-4 nuclear missiles and related supplies were spotted in these rooms months before that material was photographed by the US, when the crisis broke out.

The third control room is the fire control room for the whole fort, coordinating fire from all four gun batteries. Fire control was by means of a very interesting piece of machinery, a fully mechanical computer, taking in atmospheric data like temperature, humidity, wind direction and speed, and target data. No electricity was needed except for lighting the goggles of this analog computer! A similar item was present in Stevnsfort, but I could not see it during my guided visit.

In an adjoining room you can see a perfectly restored communication facility, with ciphered messages hanging on the walls, as well as original transmission machines and early computers. There is also a personal study room for the commander of the post.

Besides the control bunker you can find an anti-aircraft position, centered on a four-barreled anti-aircraft gun. Similar to all others, the small bunker underneath could be manned and sealed in case of war.

The cannon battery closest to the control bunker has been restored completely, including the bunker underneath. The 150 mm guns, one per battery, were made in the final years of WWII by Skoda works in Plzen, in the then-Nazi occupied territory of Czechia. They were originally intended by the Wehrmacht for the Atlantic Wall in Denmark, but they never became operative there. Instead, they ended up to be installed by Denmark to counter a Soviet threat on the Baltic.

The mechanism for supplying cartridges to the cannon is similar to that in Stevnsfort, with an elevator lifting the explosive charge and the shell separately to the level of the gun. However, here the storage bunker is just beneath the cannon, and the lift does not carry the cartridge directly inside the turret, but to a hatch in the reinforced wall besides the cannon – something similar to some of the smaller cannon batteries of the Atlantic Wall built by the Germans.

Inside the bunker you can see the ammo storage, as well as a sleeping compartment for the 15-men crew needed to operate the cannon.

Some example shells have been preserved, with colors corresponding to different functions of the shell (see Stevnsfort above).

The cartridge elevator room is very small, and access is from both sides. Explosive and shell came from opposite directions, each from the corresponding storage room.

The bunker under the next cannon battery has been dedicated to the analysis of the threat from the Danish perspective. Here you see copies of the Soviet plans to invade Denmark, as part of an operation to conquer central and northern Europe lightning-fast in case of an open war against the West. Among the most striking items, you can see detailed Soviet maps covering all regions of Denmark – with city names and all writing in Cyrillic!

There is also a nice collection of ordinary weapons and military supply from the Eastern Bloc, and especially from the neighboring German Democratic Republic. A very special feature is an example of the ‘Blücher decoration for valor’, a medal created by the GDR to be attributed to individuals for actions of exceptional courage in the defense of the GDR, and to be assigned only in case of war – thanks to the Cold War never turning ‘hot’ for the GDR, nobody could be awarded this decoration.

The next battery is dedicated to espionage and spy gear, with many examples of James-Bond-like trinkets, actually used by both enemy and Danish spies. Machinery for ciphered communication, once considered hi-tech, is also on display, together with maps used by a Danish spy visiting the Polish coast, and satellite imagery of East German/Soviet airbases.

The exhibition in the last battery is about the Cold War and society, and is full of old photographs of pro-Soviet protesters in Denmark, spies, famous characters of the Cold War, momentous events taking place in Denmark during the Cold War and so on. Most notably, there are also many artifacts from both Denmark, the Eastern Bloc and the USSR, including medals, posters, portraits and much more.

Similar to the control bunker, the power station has been preserved in its original condition. Three diesel engines could provide power to all bunkers in case of war or failure of the grid for whatever reason. Immediately outside the entrance to the power station bunker there are apparently some suspended showers…

The large area of Langelandsfort has been selected also for the exhibition of a submarine, a mine-sweeper and two aircraft! The submarine ‘Springeren’ was used by Denmark in the 1990s and early 2000s, but it was built much earlier and operated by the Norwegian Navy. Sadly, after the retirement of ‘Springeren’, the Danish Navy shut off completely its underwater branch. The ship is a small conventionally powered attack submarine. The interior is apparently pretty modern with respect to older German or US WWII U-boats.

The submarine features six torpedo tubes.

The mine-sweeper has the appearance of a small conventional boat, but with room for a crew of several men. It is hosted in a hangar together with examples of sea mines – apparently US models.

The two aircraft are a SAAB Draken of Denmark and a MiG-23 of Poland. They represent some of the most advanced aircraft of these opposing countries at the height of the Cold War. Both exemplars are well preserved inside hangars protecting them from the weather and sunlight.

Another interesting sight is a reconstruction of a civil defense bunker, with much original material, including packs of ration cards already prepared for the population in case of war. In an adjoining room you can see a reconstruction of a bunkerized broadcasting studio – the national TV channels were tasked with providing updates to the population in case of an attack, hence a similar facility was prepared in the basement of the TV headquarters.

Close to the ticket office, you are offered a very well-designed exhibition tracing the timeline of the Cold War, with some clever text and many pictures, some of which rather uncommon – really worth spending some time on, before or after visiting the museum.

There is also room for temporary exhibitions, in a hangar which includes an original section of the Berlin Wall.

The building of the ticket office is also interesting. From the back of it you can get access to a smaller exhibition about travels to the DDR (the native acronym for the GDR), with everyday items, old Interflug boarding passes, and some incredible postcards – apparently, modern Soviet-style housing and heads of Marx were the items that GDR postcard-designers liked most… Fragments of the Berlin Wall are also on display.

Ahead of the entrance there is an old and pretty big hammer and sickle, originally from a Soviet ship. The commander threw it outboard when the Soviet Union officially ceased to exist. It was collected by a Danish sailor and ended up here. Nearby you can see a reconstruction of the Berlin Wall, and an original Trabant crossing it.

Getting there and moving around

The Cold War Museum Langelandsfort is located close to the southern tip of the island of Langeland, which is connected with bridges to the major island of Fyn, where Odense can be found about 1-hour north of the museum by car. You can move around the museum on your own, there are several panels with explanations. Most panels have at least a quick translation in German and English. All presentations are very well designed and maintained. Visiting may take at least 2 hours for an interested subject, and even more especially if you are taking pictures. Free parking ahead of the entrance, and picnic area nearby. Official website here.

Aalborg Defense and Garrison Museum

This museum was opened in the year 2002, in the hangar of a seaplane base constituted by the occupying German forces in 1940. The base was potentiated in more instances during WWII, and a half-interred command bunker similar to those of the Atlantic Wall was added.

Aalborg has been a military post for centuries, therefore the museum is centered on several aspects of war and military life. Of course, the majority of the artifacts on display date from WWII and the Cold War period.

The hangar hosts a small collection of aircraft, which capture your sight when you get in. Most notably, there are a venerable F-84, an F-86, and somewhat older T-33 and Gloster Meteor.

Close by, you can find a more modern F-104. Jet engines of American make from some of these aircraft have been taken out of the airframes, and put on display separately.

Again in the center of the hangar you can see a Hawk missile system, including the missile battery and movable power and control trucks. Also anti-aircraft guns and searchlights from various ages are on display.

Items from WWII include a nice exhibition of locally-collected gear used by the Danish resistance movements. Supplied by the Allies from the air, they managed to build several types of bombs, mines, and so on, made to disturb and damage enemy transports, or to kill enemy staff in well programmed para-military actions.

Memorabilia include the engine of an US B-17 bomber, sadly downed over the Baltic during the crew’s final mission, the original Luftwaffe eagle once standing on the building of the local German air command, and a Nazi flag weaving on some public building in town in the years of the German occupation.

There are also many photographs from the area from the war years, and reproductions of German maps and local newspapers. The latter tell about relevant facts taking place during the war, as reported by the local media. There are also diplomas of merit issued by the US and Britain in favor of a local citizen, member of the resistance.

A part of the exhibition is about civil defense. Similar to the US, Britain and other countries during the Cold War, this service was activated to prepare the population to a nuclear war scenario, and to provide shelter and a chance of survival, by means of bunkers and deposits of supplies. Here you can see a reconstruction of such a shelter, and items which used to be stored in preparation for survival in the nuclear winter.

There is also a nice collection of light weapons from local firms, uniforms and communication rigs.

A few uniforms and technical gear from the current supplies of the Danish military are on display as well.

In a room to the side of the central hall, you can find uniforms dating from WWII, including German stuff. The story of a Dane coming to the US and fighting for the US Army is also told in a corner, also through some memorabilia.

On an elevated platform you can find an exhibition about the Cold War. This is mostly made by panels retracing the history of that confrontation over the decades. Among the most peculiar items on display, a copy of the invasion plan studied by the Soviet in case of a sudden war with the West. That plan included the rapid conquer of Denmark, due to its strategically relevant position. A copy of a Soviet-made map of Aalborg in Russian, needed in case of war, is another example of the unique artifacts on display.

This special Cold War exhibition is completed with a set of field and anti-aircraft weapons from various ages of the confrontation.

Other rooms around the main hall display modern uniforms, NATO-related material, military supply from various ages and even a throne used by the Queen of Denmark on an official visit.

In an adjoining smaller hangar you can find a rich collection of trucks and weapons with various – not only military – functions.

Outside, a highlight of the museum is the former air command bunker built by the Germans. This has been filled with memorabilia from the Nazi occupation period. An unusual and little-known story is told here, about the German refugees from Eastern Prussia, a region loosely coincident today with the part of Russia around the town of Kaliningrad (ex-Konigsberg). This area used to be part of Germany since before WWI, and it remained under the Weimar Republic, even though separated from German mainland. Neighboring Lithuania was annexed to the Third Reich before WWII – similar to Sudetenland – on account of the proximity to that region, with the excuse of a significant German group living in Lithuania. In 1939 the Germans re-gained control over northern Poland, and the two regions of Prussia were reunited in the Reich.

Following the victories of the Soviets in 1944 and the ensuing landslide-march towards Berlin, Eastern Prussia was lost to the enemy. Refugees escaped to mainland Germany, and the administration of the Reich sent these folks in several areas relatively far from the front – including a significant number to occupied Denmark, and especially in the hangars in Aalborg, where the museum is today. So the hangar acted as a hospitality center for the refugees. This was something strange though, for the refugees were not local nationals, but instead enemies. This led to a controversy soon after, when the war ended. In the event, most of the refugees returned to their land of origin, only to find it permanently occupied by the Soviets. Some handmade artifacts of these German refugees can be seen on display in the bunker.

Finally, a very good collection of tanks, field guns and movable howitzers from various countries including the Eastern Bloc and mainly from the various ages of the Cold War can be admired on the museum apron. For the most part, these are reportedly kept in working condition.

Getting there and moving around

The museum is located close to central Aalborg, on the waterfront. You can visit it totally on your own. Some of the exhibitions are described in more languages, but some parts are in Danish only. Nonetheless, the visit can be very rewarding for experts and for the kids as well, thanks to the chance to touch many of the artifacts on display. A two-hours time may be enough for having a look, more time is required for a more in-depth visit or if you want to take pictures.

Convenient parking just ahead of the entrance. Website with full information here.

Danish Museum of Flight

This fantastic collection of aircraft can be found next to Stauning Airport, on the west coast of Jutland, at the level of the Ringkobing firth. This is by far the largest aircraft collection in Denmark, and the reference air museum in this country.

The exhibition is well designed and rich, and it covers both the civil and military branches of aviation. Furthermore, a good half of the aircraft appear in fully airworthy conditions.

There are three thematic hangars. In the first you can find civilian aircraft from various ages, smaller sport aircraft and military trainers mainly from the inter-war period or the late 1940s. Some of them appear airworthy.

Most notably, there is the front part of the fuselage of a Douglas DC-7, formerly in service with the national carrier SAS, still on business today. The cockpit and the crew compartment are well preserved. The analog instrumentation adopted on this plane, which dates from 1957 and represents the last and most advanced of the Douglas propliners, is abundant and remarkably sophisticated.

Another unique aircraft on display is an Aerospatiale Corvette, an executive jet by the same French airframer who participated in the Concorde project. You can also board the plane.

Similarly rare today is the DeHavilland Dove, a British-made short range liner from the early Cold War period. Similar aircraft, cheap to operate, went on flying well into the 1970s in many countries. Here you see an exemplar in the colors of Cimber Air.

Among the trainers, you can find a DeHavilland Tiger Moth and a Chipmunk from the same manufacturer. Less common aircraft include a DeHavilland Hornet Moth, which apparently spent most of its flying time in Kuala Lumpur, and a nice Bucker Bestmann, a German trainer adopted and license-built also in Sweden.

Despite never adopted by the Danish military, a V-tailed Fouga Magister French trainer apparently found its way to here. It was reportedly flown in private hands by a Danish professor, before being donated to the museum.

In the first hangar are also examples of Danish aircraft production, including the reconstruction of an early prototype by a local pioneer. Propellers and dismounted engines and systems, likely used for training purposes in the past, are an interesting part of the exhibition too.

A huge collection of model engines, some air traffic control consoles and airport trucks complete the exhibition in the first hangar.

The second hangar is mainly devoted to aircraft manufactured in Denmark. Most notably, the Skandinavisk Aero Industri – abbreviated in SAI – specialized in trainers and small transport in the inter-war and WWII period, and knew a good national and local international success between 1937 and 1954, when it disappeared – and with it basically also the Danish aeronautical industry.

Some of the aircraft on display are unique exemplars, the last witnesses of this interesting story. Not all aircraft here are from this manufacturer though – an ubiquitous Piper Cub in its distinctive yellow colorway can be found as well, together with a Supermarine Spitfire. Also here, most aircraft appear to be in airworthy conditions.

In the last hangar, which despite being the largest one, is the most crumpled, you can find military aircraft retracing the history of the Danish Air Force supply. The aircraft here are all from the Cold War period, hence giving to this hangar a historical connotation. This part of the exhibition is also particularly nice, as you can walk close and beneath the aircraft, an ideal setting for getting pictures of smaller particular features.

The variety of present aircraft is very interesting, and reflects the close bounds of Denmark with the US and Britain. Aircraft from the early Cold War include Lockheed T-33, a North American F-86, and two different versions of the Republic F-84.

An exemplar of the latter is supplemented with JATO – Jet Assisted Take-Off – bottles under the fuselage. The mountings of the underwing rockets on the F-84 and of the belly rockets on the F-86 are really unique examples of Cold War technology!

A big Consolidated Catalina amphibious aircraft towers on all others in the hall, while a Douglas C-47 transport in excellent conditions is preserved in a corner, with an interesting ski system mounted on the landing gears.

British aircraft from the same early era include a Gloster Meteor and what appears to be a pretty rare Fairey Firefly. Another US design is a T-6 trainer, to be found under the wing of the Catalina.

More recent designs still from the Cold War include a Lockheed F-104, a British Hawker Hunter and a Swedish SAAB Draken.

Especially the configuration of the latter – both the general configuration and the arrangement of the landing gear and wing pylons – is really unique, reflecting a different yet interesting school of aircraft design.

Rather uncommon out of the US, a North American F-100 Super Sabre is also on display, with a foldable Pitot boom.

Finally there are a Hawk missile battery, a movable command center and service trucks.

Modern aircraft are represented here by an F-16. There are also two helicopters of US make, closing the collection.

Getting there and moving around

The museum is located between Stauning and Velling, two small villages on the inner coast of the Ringkobing firth, western Jutland. The facility is modern, with a large free parking and a picnic area. It is located on the border of a local airport, immersed in nature – a very pleasant location. The museum requires about 2 hours for an interested subject, 2.5 if you want to take pictures. Website with full information here.

Hitler’s Mystery Mega-Structures in Central Europe

During the last two years of WWII, the Wehrmacht of Nazi Germany was slowly retreating from the eastern front, pushed back by the mighty blows of the Red Army. The bombing runs carried out by the western Allies from airfields in Britain were systematically hitting most urban centers in mainland Germany and over the territory occupied by the Nazis. It is hard to imagine, but it was in the year 1944, when the destiny of Germany was almost sealed, that industrial production in Hitler’s Third Reich reached an all-time record.

At that time the Germans were desperately short of fuel, raw materials and troops, and their production efforts would not spare them from a complete defeat in 1945. Yet it was in the last stages of the war that some of the most ambitious industrial facilities were designed, built and in some cases made operative before the end of the war.

The driver of the design was in most cases the need to move production lines to secluded and well protected areas, difficult to spot and to destroy through air bombing. As a result, these sites were placed far from urban centers. They were also designed to withstand bombing, by putting them underground, or building them with substantial reinforcement, making large use of one of Nazi Germany’s favorite materials – reinforced concrete.

In this chapter two major sites of this kind are described. One is in southwestern Poland, a region which had been part of the German Empire for long before WWII. The second is in eastern Bayern, today one of Federal Germany’s most prosperous states, close to the border with the Czech Republic. Photographs were taken in late summer 2018.

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Sights

Project ‘Riese’, Poland

Construction around this cluster of underground sites started in late 1943, and reportedly lasted until the closing stages of WWII, just days before the Soviets entered the region. The name ‘Riese’ means ‘giant’ in German, and it is surely well suited for this complex, which while far from finished is really striking in size. It was actually composed of at least six major construction sites, which in the intention of their designers should have been developed deeper in the mountains, until a link could be established between them forming a formidable network of tunnels and large halls.

Besides the size and historical meaning of these sites, what makes project ‘Riese’ so fascinating is also the actual purpose of this incredible complex is far from established. Three major theories exist in this respect. The complex might have been intended to be an underground industrial city, a kind of Noah’s Ark for the ‘superior race’ embodied by the top-ranking military and governmental staff of the Reich, or a gigantic secret laboratory for innovative technologies.

What is sure is that the construction was carried out by forced labor, mainly by prisoners of Gross-Rosen concentration camp, just a few miles north of the complex. For the scope, the Nazis created a number of satellite camps next to the entrance of the  construction sites. Rather incredibly, only very scant traces of the project remain in the written records of key figures of Nazi Germany – Albert Speer’s personal diary notably reports some millions marks allocated for project ‘Riese’, and at some point after the war he cited the item resulting from the completion of the construction works, whatever its purpose, as sized to be capable of hosting some tens of thousands people.

Today, six construction sites have been discovered, of which two – Osowka and Rzeczka, the most conspicuous – have been opened to the public, whereas the other are visitable basically for speleologists only.

Osowka

The first visitable site is in the town of Osowka. This site is composed of two parts, one underground with access from the side of a hill, the other close to the top of the same hill.

The underground part can be visited only with a guide. The plant of the completed construction features two accesses, and you will be driven in using the first and out using the other. Between the entrances, the site is mainly composed of an array of parallel tunnels pointing towards the mountain, connected by long halls.

Close to the entrance you can spot a concrete guardhouse with loopholes for machine guns. Some wooden structures like in a mine have been put in place to give an idea of the appearance of the working technique at the time of construction.

Most tunnels have been dug but not reinforced with concrete walls, whereas others are almost complete, showing a peculiar two-level design. The lower level features a smaller section, and the top one a taller, round shaped section.

A feature of the ‘Riese’ complex is a special technique for building the inner concrete coat of the rocky tunnels, producing the distinctive ‘church-ceiling-like’ appearance of some of the halls, with a round shape and frames close to one another.

The Osowka site features also a collection of smaller artifacts, collected from the ground and dating from the construction years, i.e. from late WWII.

Life-size silhouettes of some WWII tanks are on display, to show how the size of these items was totally compatible with the size of the tunnels, in support of a potential use of the site for weapon manufacture.

The outside part, which can be accessed freely, is the most mysterious. At the base of the trail leading uphill you can spot a strange concrete platform, with provision for – possibly – interred pipelines.

Close to the top of the hill you can find a huge concrete platform, with an apparently chaotic ensemble of slots, pipes, handles, stairs and pools. This item has been deemed close in shape to the base of a service building for the valves and pipelines of a power-plant. Theories have flourished in support of the use of this item as a prototype control system for a nuclear power-plant.

The nuclear program of the Nazis, which indeed existed and is even documented to some extent, is shrouded in mystery for what concerns the actual findings obtained during the war. These dark spots are also due to the destruction of most of the hardware connected with the program everywhere in Germany, and with the inherent secret nature of the program itself. No evidence exists of the Osowka site in the public papers about the nuclear studies of the Reich, so the true purpose of this object is likely to remain an unsolved riddle.

Close by this platform, you can find an original concrete building, part of the same construction plan. It is pretty long, with large windows, and likely intended for troops or technical staff.

Rzeczka

Compared to Osowka, this site is more centered on the inside part. Again, there are two entrances, close by a creek on the side of a hill, providing access to a network of tunnels. Similar to Osowka, close by the entrance you can find guard-houses in concrete. These were built soon, possibly for keeping a watch on the forced workers.

The construction works in Rzeczka were less advanced than those in Osowka. Yet thanks to the lack of the concrete coat, you can appreciate the size of the tunnels, some of which are really tall.

There are small collections of artifacts found in the tunnels, and an original concrete room offers a description of all discovered sites of the ‘Riese’ project.

A 1:1 copy of a V-1 German flying bomb has been placed in one of the tunnels, to show the compatibility of the size of this weapon with the tunnel. Such weapons were reportedly assembled in underground facilities elsewhere in Germany.

Visiting is again possible only with a guide. Some multi-media experiences with sounds, lights and voices are included in the tour, but these are not so impressive for those who don’t understand Polish.

On the outside, you can spot some relics from construction years, including trolleys, and concrete slabs watermarked with symbols of the local construction companies tasked with the practical realization of the site. There is also a copy of a V-2 rocket, operative in the last months of WWII but little effective in changing the fate of Nazi Germany.

Getting there and moving around

As pointed out, the sites connected with project ‘Riese’ are many, but most of them are not visitable unless to specialists and with the help of a speleologist. On the other hand, the two sites of Osowka and Rzeczka are professionally operated as primary tourist attractions. The distance from these two sites is about 20 minutes by car, so you can surely arrange the tour of both sites on the same day, with much spare time in your daily schedule.

At Osowka you can find a large parking and a fully equipped visitor center, where you can book a guided tour, or join a departing one – the only way to get inside. Please note that the number of people admitted on each tour is relatively small, so I would suggest booking at least one day in advance through their website (partly also in English) to be sure to get a place at the time you like. They offer several different tours. The most complete include a visit to a part of the underground site which can only be accessed by boat. This is given only on some days by reservation, and only for groups. The standard tour of the inside is offered several times a day.

The guided may turn out really boring, cause you are provided an audio-guide in English with explanations lasting a couple of minutes for each of the circa ten stops, in face of the Polish-speaking guide talking about 5 minutes per site. You may try to spend your spare time taking good pictures, but even though groups are relatively small, they tend to obstruct the view inside, leaving poor chances for acceptable shots. Furthermore, lighting is not very good, so a tripod would be recommended, except you don’t have the time and chance for undisturbed long poses. Therefore, if you are interested in top-level pictures, you would better arrange a dedicated tour out of the normal touristic offer. Otherwise, you’d better go prepared to a difficult visit.

The outside part of the site is less frequented and more rewarding. It can be reached in about ten minutes following a pretty steep, unpaved trail in the trees. This part is unfenced and unguarded.

The Rzeczka site has only an inside part, which can be visited only on a guided tour. You can join one of the frequent tours they provide even without reservation. There is a small visitor center and plenty of parking space. Similar to Osowka, the guide will speak in Polish, and you are provided an audio-guide in English. The visit lasts less than in the case of Osowka, and the audio-guide explanations are more proportionate to the speech of the Polish-speaking guide, making for a more enjoyable visit. The multi-media experiences are of little relevance for non Polish-speaking people. Outside you can find also some panels with explanations on the history of the site in both Polish and English. Website with some info in English here.

The tunnels in Rzeczka are poorly lighted too, so photographing will be difficult unless with a tripod, but the conditions are not very favorable for operating with a tripod – many people around and short times between stops along the tour.

‘Weingut I’ Aviation Industry Complex, Germany

The giant complex known as ‘Weingut I’, the original codename attributed by the Nazi staff at the time of its design and construction, is the direct result of a plan to relocate all major industrial production lines of the Reich to protected areas, far from the line of the front and from any major urban center. In this particular case, the new factory was intended to shelter the production line of the new Junkers Jumo 004 jet engines for the ‘Schwalbe’ – also known as Messerschmitt Me-262, this was the first jet fighter in the world to be pushed into service, back in 1944.

The huge factory was designed based on a basic module made of a reinforced concrete arch, some 250 ft open, 100 ft tall and 10 to 15 ft thick. This item was to be built on site and partly buried under ground level. Twelve such modules were needed for the complete hangar, with a total intended length of the factory of around 1.200 ft. Of the planned twelve sections, seven were actually built between mid-1944 and the end of the war.

Despite the intended scope was that of hiding the factory to protect it from aerial reconnaissance, due to the size of the construction works the object was reportedly spotted by US aircraft, but not attacked. Actually, the special construction was tested against explosives by the US Army after the war, resulting in the collapse of all modules except one, which is still standing today besides the pretty sizable relics of the others.

The site is not actively guarded, but it is located in a regional nature preserve, so access is through a nice walk in the trees. Once next to the hangar you can find multiple access points.

Close to the main arch, the only one still standing, it is possible to find an explanatory panel in German only. It commemorates also the forced laborers from the nearby concentration camps, who had to take part substantially in the construction works.

Walking under the arch is at your own risk, cause despite the bulky appearance of the structure, smaller pieces of concrete are hanging from from the ceiling. However, a walk inside will give you the most striking impression of the size of the hangar.

Just nearby the remaining module to the west you can find a walkable, half interred bunker, likely with a technical function which is today hard to imagine.

The module still standing today is the westernmost of the hangar, so walking east you will have the chance to step on the roof of the demolished modules. A number of thick iron rods can be spot at ground level.

Walking along the former southern side of the hangar, you can spot a deep well, probably part of the construction strategy. It may have been used to take out the gravel from beneath the base of the arches to lower them to a rest position on more compact ground.

Along the same side you can find a way to walk below the fallen structure. You can also get a view of the edge of one of the modules.

The eastern end of the complex is probably the most hazardous, cause you find an unprotected concrete cliff a good 10 ft high, constituted by the edge of a fallen module.

All in all, the place is a nice example of the undeniable structural design abilities of the German military, really interesting to visit both from a technical viewpoint and as a witness of the utopian visions of the Nazis, which unfortunately cost the lives of many.

Getting there and moving around

Reaching the trail-head is very easy by car. Leaving Mühldorf am Inn for Waldkraiburg along the road St2352, about 0.5 miles south of the crossing with St2550 you will find a sizable gravel factory to your right, preceded by an unpaved road taking west in the trees. You can park on the unpaved road on the northern side of the factory – probably a heir of the original factory built to feed the construction works of the hangar.

From there, you should take the unpaved trail into the trees, closed to vehicle traffic. It is another 0.5 miles to the site, on a flat and easy trail. A quick scan of the Google map will allow you to plan the trip. The place is not remote, cell phones work and you may use a virtual map to get oriented on site. Visiting might take about 2 hours for a very interested subject, including the trip from the parking and back, plus all time needed for pictures .