Visit the large gray flak bunker built during World War II that served as an emergency shelter, storage, vaccination station, and Cold War bunker for many decades.
After reunification, the concrete giant found new life. Join a knowledgeable tour guide on a journey through the bunker's history, from its construction to modern days. Hear stories from the "Heiligengeistfeld" studio, learn about its sustainable greenery concept, and discover the bunker's recent transformation.