A few friends and I have gone into the Richardson Building, after dark and spent the night.
It would definitely qualify as a "ghost hunter's" paradise; having been a psychiatric institute during what may be termed a "bleak period" in the annals of psychiatric understanding and progress.
Exploring the sealed off area was definitely challenging and somewhat dangerous, owing to the structural damage to the floors and ceilings - One is liable to fall to their death or suffer an overhead collapse.
It's also very easy to get lost in the ominous darkness of the circuitous hallways, on the many levels - One must have a very good memory and a very good sense of direction.
Can't go in there all "messed up" and expect to manage the challenge. Though we did take "some refreshment" on the copper-plate south roof, just off the top floor, shortly before leaving.
The whole time there we made a point of staying to the walls, where there was greater support. The smell and decay were oppressive.
There were obvious signs of "squatting"...as well as "squatting"...if you get my drift?

...after many hours, all I came away with was a tear in my jeans, from snagging them atop the surrounding chain-link fence.
Great amount of history, though - For anyone interested in the design of institutional structures; especially one familiar with the architecture of asylums.
A recommended place to visit - But, not for anyone who is unfit or unobservant. It's also a trespass charge, if not a reckless endangerment charge, as well.
Gotta be really smart about it - Any idiot in the group gets hurt or killed, everyone goes down for the rap.
