The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

A treasure hunter's tiny bar, harboring celebrities since 1959.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

This bank is widely believed to be the inspiration for the offices of Philip Marlowe, the hardboiled detective featured in a number of Raymond Chandler's stories.

Formerly Fire Station No. 27, the museum is a hidden gem in the heart of Hollywood.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A multimedia experience that chronicles the atrocities of racism.

This curiosity shop contains a museum filled with bizarre, unique objects.

Stairs often replace streets on the steep slopes of this old mining town.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A Tucson museum and performance space full of found-object movable sculptures.

Collection of vintage trailers double as hotel rooms.

The world's largest military aircraft cemetery.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

America's only nuclear missile silo open to the public.

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

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The largest island on the great salt lake is home to curious creatures and strange stories.