The water tower in Prenzlauer Berg is a landmark of Berlin. It was an actual working water tower until the 1950s. My friend Joo at Urban Stories showed a similar one from Poland not too long ago.
However this tower has a dark past; it was used by the Nazis as a place to detain and torture political dissidents during the 1940s. The tower has now been converted to apartments, but some say there are still ghosts who haunt the premises. Photo taken in July 2006.