4. Hotel Monteleone, New Orleans, LA
Built more than a century ago in New Orleans’ French Quarter the Hotel Monteleone is considered one of the most haunted sites in the U.S. and boasts more than a dozen known ghostly inhabitants. Most of the paranormal activity is said to be focused on the 14th floor of the hotel which, in reality is the 13th, but there are sightings of activity all throughout the hotel including the spirits of some former employees who it seems may have taken their jobs a bit too seriously. One of the most commonly told sightings is that of small children running throughout the halls, and especially two young boys playing hide-and-seek. Another spirit known to the staff as “Ms. Clean” is supposedly that of a former housekeeper who has stuck around to keep an eye on her predecessors and ensure the quality of their work.