Old Museums house ghost of the past.  Some of them are still around.  Read about encounters with ghosts at West Overton Museums in Scottdale Pennsylvania.  This museum and the forty-three acres surrounding is the site for several persistent ghosts.  Read about the lady haunting the second story of the farmhouse.  Read about the ghost in the top hat that sent Civil War Re-enactors scurrying from their tents and into the barn for the night.  And they had cannon in the barn.