Ghost hunting has become big business, with paranormal experts offering as evidence dark shadows and orbs of light caught on film, recordings of strange noises and unexplained temperature drops. Most haunted places capitalize on the attention by offering ghost tours. Waverly Hills Sanatorium in Louisville, KY, even lets you spend the night. Request room 502 only if you want company: the spirit of a nurse who hanged herself from a lightbulb wire.
Even for skeptics, playing along can be irresistible. So turn out the lights, and get ready to conjure some spirits at these haunted places.