Visited November 2015.
Beelitz Heilstätten is an abandoned hospital/sanatorium hidden in the woods near Berlin (Germany). Built in phases between 1898 and 1930 to house and treat the fast growing number of tuberculosis patients in expanding Berlin. The sanatorium was strictly divided: women were accommodated to the west of the main road, men to the east. Is was fully selfsupporting with power generators, water tanks, stores, etc.
Is has a great history; during World War I and II it was requisitioned for use as a military hospital. After World II the Soviets occupied Beelitz-Heilstätten and it became a closed military zone, used as the main hospital for Soviet troops stationed in the region, and for high-ranking GDR officials.
Among thousands of patients were two famous ones: an infantry solider named Adolf Hitler was treated for a thigh wound, and in 1990 the deposed GDR leader Erich Honecker was briefly treated at Beelitz, before escaping to Moscow.