Know Before You Go
There are occasional ghost hunt events that open up three of the back buildings. These are separate from their normal tours/hunts. The over-night ghost hunt tour costs around $100 per person and has limited slots available, but for those wanting a bit more freedom to explore, this is a really great experience. They label this as Ghost Hunt, but it's also an awesome LEGAL urban exploration of an abandoned set of asylum buildings. It's a superb opportunity for photographers. Make sure to visit the official web site and check schedule/availability.