A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A castle that was built stone by stone by an eccentric journalist.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

One of only two commuter aerial tramways in the United States.

Hollowed out cedar log tubs set in an ancient towering forest.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This abandoned amusement park was built on a site with a dark history.

Odd outsider art installations surround a Gold Rush-era ghost town.

The first declared National Monument in the United States.

A rare view of a preserved Victorian science museum.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Where America's first doomsday cult awaited the end of the world.

Mysterious rocks that ring musically when struck.

Home of an evil witch famous within southern folklore.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A trash dump made beautiful by nature's power.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

America's most famous piece of self-built architecture.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.