23 Real-World Haunts That Are Seriously Creepy

8. The Forsaken Sanatorium of Beelitz-Heilstätten

Hidden deep in the forests outside Berlin, Germany, the Beelitz-Heilstätten sanatorium is one of the most chilling abandoned places in the world. Originally built as a tuberculosis hospital in the late 19th century, it later served as a military hospital during both World Wars, even treating a young Adolf Hitler. After being occupied by the Soviet army for decades, the sprawling complex was left to decay, its eerie hallways and crumbling operating rooms now reclaimed by nature. What makes Beelitz-Heilstätten particularly unsettling is its ghostly atmosphere—wheelchairs and rusted medical equipment still sit untouched, and graffiti-covered walls add to its nightmarish charm. The abandoned surgery rooms, with their cracked tiles and shattered windows, have drawn urban explorers and paranormal enthusiasts who swear the building is still haunted by its long-departed patients. While some sections have been converted into a luxury rehabilitation center, large parts remain frozen in time, making it a must-visit for those drawn to the eerie and abandoned.