While most abandoned buildings looks like they're haunted, they're really just the derelict remains of a mansion that a family struggled to sell or the shell of an old warehouse. But the history behind Beelitz-Heilstätten Hospital is actually as creepy as it looks.
Built as a tuberculosis sanatorium, this enormous hospital complex stands 30 miles southwest of Berlin. It was used to treat Nazis during World War II and the Soviet Army up until the 1990s. This is also where a young Adolf Hitler recovered after being wounded in World War I.