At my school, backstage in the auditorium, a girl died number of years ago (~44) there was somebody who told us that, so we all went back with him and saw the plaque above a dressing room that is dedicated to her. Just off of the stage, it is usually very dark. There are stairs going up to some storage for select props and such from plays in years past, and some graffiti on the walls, and an organ at the bottom of the stairs. Underneath the stairs, there is an old bathroom which, I think also has graffiti in it. Almost every time that anybody looked up there (the top of the stairs), they would see something like a white flash, or something almost like somebody waving a white blanket around, but just for a second, then it would be gone. When I showed somebody else, last year, who had moved into the district shortly before, I was the only one who would take him back into the hall to show him the plaque above the dressing room. I did, and he said that it "felt weird back there." I agreed that there was a strange presence back there. I have a little bit of an explanation for the seeing things, since it is somewhat bright on stage, but none for the creepy atmosphere in general. Sorry, I didn't get a chance to take any pictures. I will try to remember to take some and post them here next time there is a concert in a few months.