Grand Canyon National Park: A strange series of events in Grand Canyon National Park leads researchers to speculate whether its power comes from forces that cannot be explained.

Everglades National Park: A plane crash in the Everglades National Park leads to strange hauntings - and some believe the park may exert a dark, transformative power.

Hawaii Volcanoes National Park: The Hawaii Volcanoes National Park is the site of strange events. Are they linked to the legendary Native Hawaiian Goddess of the Volcano, Pele?

Joshua Tree National Park: Are UFO sightings at Joshua Tree linked to an anti-aging machine and a powerful creature called the Yucca Man?

Glacier National Park: In Montana's Glacier National Park, some claim that there is a hidden underground Nazi base that may even have been the final hideout for Hitler himself.

Mount Shasta National Forest: From inexplicable disappearances to mysterious experiments, events in Mount Shasta National Park may be explained by an ancient Karuk Indian legend.