I worked at the Star Hotel in Truckee, Nevada and got to see MUCH more ghostly activity than I ever wanted to see.
Many staff, including me felt touching by unseen hands on several occasions. Often the room got ice cold during these occurrences.
Also a shadowy figure would walk from one room to the other on the ground floor at night, often in full view of staff and guests alike.
Some people believe the adjacent graveyard may have something to do with the numerous apparitions.