Falkenhagen Bunker

The Falkenhagen Bunker is an abandoned semi-submerged and bunker-level military industrial complex, just north of the town of Falkenhagen in the district Märkisch-Oderland, in Brandenburg, Germany.

Designed originally by Nazi Germany for the production of N-stoff (chlorine trifluoride). Never reaching its potential before being over run by the Soviet Army in 1945, the site was eventually reconstructed by the Warsaw Pact to become its main command and control bunker outside the Soviet Union.

Nazi Germany: 1938–1945
Under the code name N-stoff ("substance N"), chlorine trifluoride was investigated for military applications by the Kaiser Wilhelm Institute in Nazi Germany from slightly before the start of World War II. Tests were made against mock-ups of the Maginot Line fortifications, and it was found to be an effective combined incendiary weapon and poison gas.

From 1938 construction commenced on a partly bunkered, partly subterranean 14,000 m² munitions factory at Falkenhagen, which was intended to produce 50 tonnes of N-stoff per month, plus Sarin. However, by the time it was captured by the advancing Red Army in 1944, the factory had produced only about 30 to 50 tonnes, at a cost of over 100 German Reichsmark per kilogram. N-stoff was never used in war.

Soviet Army:1945–1993
After the end of World War 2, and with the Soviets aware of the US Army nuclear and chemical capability, the fate of Falkenhagen complex was secured as a research facility. Little is known of what exact research was undertaken, but the complex was operational as a Soviet Army facility throughout the 1950s.

In 1965, the warsaw Pact countries established a main command post at Falkenhagen. The bunkers were extended and refurbished, and complex communications technology installed, creating a state-of-the-art nuclear and chemical warfare proof underground bunker with supporting facilities. From intelligence created by the Western allies, the complex was seen as the main bunker of the Warsaw Pact outside of the Soviet Union. Developed over the years, the once sparse industrial complex gained a Soviet military village, containing a theatre, shops, a school, housing and medical facilities.

Abandonment:1993-present
When East Germany reunified in 1989–90, the Soviets agreed to hand back their bases to the unified German authorities by 1994. They spent the next three years stripping the Falkenhagen Bunker of all signs of military occupation, leaving only the hardened concrete subterranean structures when they left the complex in 1993.