https://www.ancient-origins.net/myths-legends-europe/haunted-monuments-0017889Edinburgh Castle
The castle’s most recent ghost story occurred in 2003. Members of a construction crew doing restoration work complained of being harassed by ghosts. These ghosts were believed to be the ghosts of prisoners kept at the castle during the Napoleonic wars. Photos of the workers show strange blue orbs floating above the worker's heads.
Can anyone find these photos of the blue orbs? It was in 2003 so they should be around here somewhere.