Ominously nicknamed "Devils Mountain," Teufelsberg is what you imagine from Berlin, a city still showing the scars of the Cold War. The complex on top of Teufelsberg was a former U.S. listening post during the cold war and the hill itself was actually made from all the rubble of the city after Berlin's destruction during the Second World War. The hill covers a Nazi military technical college designed by Albert Speers which the Allies unsuccessfully tried to destroy, so instead they covered i...