After moving from birmingham to wales, I got a job as an evening porter at Gregynog Hall, a 90 bed residential conference centre, belonging to the university of wales.
There had been a Gregynog hall on this site, back to the 14th century, but the main building was demolished in the late 1800's, due to the fact it was so rat infested and uninhabitable. The new (sic) building has been used as a hospital during WW1, and is now purely residential for the Uni's use.
Acouple of incidents, while I was there, were:
The Hall Director came out of his offices (situated in a seperate building) and walked into the Hall itself. He had to walk past the old Edwardian laundry room, and he saw an elderly lady, with her hair tied up in a bun, staring at him quite sternly through the window. He went to investigate as it is closed off to residents, and found no one in there.
The cleaners went into the rooms to do their usual morning cleanup, and in one, found it full of mattresses and bedding. On questioning the course that were resident (female journalists), one of them sheepishly told them that one of the girls woke in the night to find someone standing next to the bed, then this 'apparition' whispered in her ear. Well the ensuing screaming from her woke everyone else in the other rooms on that floor, and they only way they would settle was to all sleep in the same room. (not a course of lesbian journo's)