Beelitz-Heilstätten Hospital – Beelitz, Germany
Once a sanatorium to reportedly house people with fatal tuberculosis, the site was converted into a military hospital complex used during World War I. Adolf Hitler is said to have been treated at the site after he was wounded in the war. The primarily abandoned complex still features crumbling surgical and psychiatry wards. A small portion of the complex is reportedly still used for neurological rehabilitation and Parkinson’s research.