The site on Northgate, has been boarded up since Mid Yorkshire Hospitals NHS Trust moved services out of the building 2012.
In January 2014 200 people turned up to a ghost hunt at the 19th century site, on Northgate, after rumours it was haunted circulated on social media.
Police made four arrests and warned that the site was not safe and there was been constant vandalism at the site.
At the time, Insp Ian Williams said: “We have found used needles and evidence that fires have been lit there.”
This was by far the most worse for wear derp we had seen in a long time. I was the only one to even bother getting a camera out hardly warrants a report more of just a pointer to others that its really not worth going out your way for and certainly don't go it alone! #GrimUpNorth