Moundsville Penitentiary in West Virginia was the site of a TAPS investigation for "Ghost Hunters" show. They were able to debunk the shadowperson photo that was so famous, but they did manage to have some unsettling experiences. The physicality of this place is ideal. Here's why:
1. Near a waterway.
2. Huge stone structure (which should make it more potent).
3. Limestone/sandstone land.
5. Older than 50 years.
Hopefully, when reviewing this site's actual proof of haunting by ghost groups, we can determine if a place with ideal conditions could still not be haunted, or perhaps it has to be haunted. It will be interesting to see.