While people may have abandoned these buildings where horrible and inhumane things happened for decades, some believe that some ghosts still haunt these former psychiatric hospitals.

Sources: https://pastebin.com/WUfxiFCw

[0:17] Willard State Hospital, Ovid, New York
[9:09] Kenmore hospital, Goulburn, Australia
[18:38] Poveglia Hospital, Italy

source