Hotels are creepy enough on their own - faceless housekeepers who make your bed when you're not looking, mysterious guests lurking just next door, an endless string of strangers who've used your pillow. Shiver. Now imagine a stay at someplace that's actually haunted. A place where some people checked in and never quite checked out. Whether you use this list as the ultimate spooktacular vacation guide, or as a road map of warnings, is up to you. Book a room at your own risk.