It is perhaps not all too surprising that the ground under Berlin, the city which played a role in two major wars (one hot, one cold) contains numerous bunkers and air raid shelters. If you’re ever there, definitely take a tour through some of these installations with Berliner Unterwelten.
A whole different caliber of bunker, however, lies near the East German town of Prenden, just north of Berlin, and was to serve as protection against a nuclear strike for the leadership of the GDR and has therefore been dubbed the “Honecker Bunker “. The bunker is currently open to the public but will be sealed indefinitely at the end of October. I’m kind of bummed I won’t be able to make it to Berlin until then, but console myself with a fantastic Flickr photoset of the place (via Nerdcore)