I used to work in an old medical building that had a morgue with bodies for dissection in the anotomy lab. That was a grusome room, embalmed bodies on marble slabs being peeled back from head to toes throughout the year until there was nothing left. Trays of old dissection tools. The morgue was full of embalmed bodies hanging by hooks under their arms, their wrists tied back waiting for the next year. They were covered with plastic, hanging on racks like cloths at a dry cleaners.
I would sometimes pull all nighters one floor up where I was the only one in this huge quiet building. In the middle of the night when you are numb and tired, things would happen. Shadows would appear and move, you'd feel a chill and an odd feeling in the gut. When I mentioned it, I was told that there were many reports of hauntings. As if the morgue wasn't enough, people had committed suicide in the building. There were some workers that out-and-out refused to be in there after dark. There was something about that building, you felt it when you entered.