An eatery for UFO seekers on the Extraterrestrial Highway.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

A picture-perfect town, perfect for blowing up.

Nationwide network of co-ownership underground catastrophe shelters.

Water of undetermined depth has attracted rare fish and cult leaders alike.

Abandoned Air Force base that has fallen into disrepair.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

One woman's Viking Castle on Lake Tahoe.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

A one-of-a-kind collection of a unique medium.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A swing to dangle you off the very edge.

The fairy tale castle of the "fairy-tale king."

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Medicinal spa created with the discharge from a geothermal energy plant.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

An exquisite tunnel of cascading flowers.

World's first "penitentiary," meant to be humane, drove men insane.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.