Beelitz-Heilstätten, a district of the town, is home to a large hospital complex of about 60 buildings including a cogeneration plant erected from 1898 on according to plans of architect Heino Schmieden. Originally designed as a sanatorium by the Berlin workers' health insurance corporation, the complex from the beginning of World War I on was a military hospital of the Imperial German Army, during October and November 1916. Hitler was treated for wounds during WWI. It has been abandoned since 2000.