My wife and I have done quite a bit of this kind of work....
We take it to new levels by using Ouija boards and such..
We once explored a place called Moonville Tunnel and used the board with some strangers... it ended up being a pretty frightening experience. We pretty clearly heard and saw some things I never expected to see.
There’s a pretty famous asylum called The Ridges on the Ohio University campus. It’s been closed for years but we found our way inside briefly once. The inside was absolutely beautiful- and the cemetery out back from the victims of tuberculosis was another shock...
Also, gravestones with patient numbers instead of names..lobotomies gone wrong and the such...
Just to name a couple places we have explored.