My now-deceased aunt was the administrator for a state psych hospital in North Carolina, Cherry Hospital (there is a new, modern hospital; she worked at the old creepy-ass hospital Cherry Hospital).
When we'd travel through the area we'd stop by to see her. That place scared the living hell out of me. I mean, it was old-school, brutal, and cold.
Growing up in Philly, we had Byberry mental hospital. It was knocked down years ago, a 55+ community sits there, that place was creepy as fuck with lots of bad things happening there during time open.