Gesundbrunnen bunker
I had heard about this bunker, and the tours run from the local U-bahn station. In a very heavily tree park is a hill and this bunker stands on top of it , although much of it is underground. I was amazed at how big it was, you can see the man standing next to the wall below to give some perspective. From what I could read what you see is the Flakturm or anti-aircraft tower
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