3 Mammoth Cave National Park Kentucky shutterstock_295271858.jpg

Shutterstock

If you are looking for a truly spooky experience you should check out what is called “the most haunted natural wonder in the world.” Cavern tours are offered by lantern light for extra ambiance. Keep an eye out for any weird shadows, as the cave was used as a burial ground for local aboriginal tribes and cave explorers. The most famous one is the ghost of Stephen Bishop, a slave and explorer who is buried nearby. There was also a tuberculosis hospital in the 1800s, which is why some people say they hear coughs.