Nummela Sanatorium — Finland's abandoned hospital in the dark forest

Nummela Sanatorium, an abandoned hospital in the village of Röykkä in southern Finland, has been rumoured to exhibit paranormal phenomena since its closure. The sanatorium, originally built to treat tuberculosis patients, served as a medical facility through much of the 20th century. Like many TB sanatoriums, it was a place where patients spent months or years in isolation, and many died far from their families. The abandoned building, set among dense Finnish pine forests, has attracted urban explorers and paranormal investigators who report hearing footsteps in the empty corridors, seeing lights in the windows at night, and experiencing equipment malfunctions within the building. Some visitors describe the sound of coughing — the distinctive sound of advanced tuberculosis — echoing through the wards. The most unsettling reports involve the sensation of being watched from the windows as visitors approach the building through the forest. Finland's long, dark winters, during which the sun barely rises for weeks, amplify the atmosphere of any abandoned building — but a former hospital where patients died in isolation takes on an additional dimension of melancholy. The surrounding forest, with its tall pines and silence broken only by wind and birdsong, creates a sense of profound isolation.