Stephen, you have got to show us a photo, pleeeeeease.
I have spent many nights in spooky places. When I worked for an opera company we used to spend most of the summers playing gigs in National Heritage sites, many of which were Castles and Abbeys. The orchestra, to keep costs down (and because it was a laugh), used to camp on site for the weekend, so we got to camp in all these fantastic spooky places, often being locked in.