University of Connecticut officials say there are clearly no ghosts at the former mental institution that now serves as the school's Depot Campus in Mansfield.
But the abandoned buildings at the former Mansfield Training School have made it an attraction for ghost hunters, horror filmmakers, copper thieves and the curious.
See photos of some of the abandoned buildings here.
The school has put up fencing around many of the decaying buildings to keep people out, and police make regular patrols, but say that doesn't always stop trespassers.
While some say its intriguing, university officials are warning everyone, especially so close to Halloween, that four people have been arrested this year alone for trespassing.
School officials say they'd like to find more uses for the more than 350-acre property, which is on the National Register of Historic places. But red tape, cleanup cost and other priorities have kept them from moving forward.
Copyright 2016 WFSB (Meredith Corporation). The Associated Press contributed to this report. All rights reserved.