Zivilschutzbunker Köln-Kalk, Cold War deep bunker in Kalk, Germany
The underground shelter spans 4,000 square meters across two levels beneath Kalker Hauptstrasse, connected to the Kalk Post subway station.
Constructed in 1979 during the Cold War, this civil defense facility was designed to protect 2,366 people from nuclear, biological, and chemical threats.
The Documentation Center Cold War operates guided tours through the fully preserved shelter, educating visitors about civil defense strategies.
The facility contains water pumps from a private well, a ship engine for power generation, and an advanced ventilation system for emergency situations.
The bunker remains the only complete civil protection facility in Cologne, featuring 40-centimeter thick armored steel doors from Bochumer Eisenhütte Heintzmann.
Location: Cologne
GPS coordinates: 50.93750,6.99861
Latest update: March 3, 2025 13:41
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