Asylum
5/5
Indiana State Sanatorium
The Indiana State Sanatorium, opened in 1908 near Rockville, Indiana, was a state-of-the-art tuberculosis treatment facility that operated for over eight decades. Sprawling across 200 acres with nearly 20 historic structures—including a massive main hospital, administration buildings, a power plant, and an intricate underground tunnel network—the site saw thousands of deaths from consumption. Today, it stands as one of the Midwest's most famous and actively investigated paranormal hotspots.