Building began in 1898, and the hospital opened in 1900, Kolkwitz was initially constructed to serve female TB patients. In 1925 additional buildings were added, such as the houses that dot the site and apparently a mortuary, which I couldn't find. After Beelitz had been taken over as a military hospital, Kolkwitz became the leading centre for tuberculosis treatment in Brandenburg. With the decline of TB, the hospital's role shifted more towards stroke and heart attack rehabilitation. The last patients left in 2007 when the hospital's functions moved to the Carl-Thiem-Klinikum.