Hamburg's "underworlds" bunker tours
and other cities, Hamburg
too has its WWII
air-raid shelters and Cold War
nuclear bunkers, some of which can be visited by tourists on specialist guided tours. The Hamburg equivalent to the "Berliner Unterwelten
" association is called "Hamburger Unterwelten
", and there is even a second such organisation called "unter Hamburg
" (literally 'under Hamburg' – also quite apt).
Both offer various tours of different sites. Unlike their Berlin-based counterpart, however, they do not offer regularly scheduled tours that you can simply turn up for. Instead all tours have to be signed up for in advance – well in advance: they often book out weeks or even months ahead of their scheduled date.
As regards costs: the normal tours (in German) with both associations cost in the region of 5 to 10 EUR per person; specially arranged English-language tours are likely to be more expensive. I haven't been on any of their tours yet, as I haven't been to Hamburg long enough in recent years, and their tours tend to book out so far in advance. But hopefully one day I will be able to give a first-hand report here.