A self-built castle made by a mysterious man.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

For those going through a life transition, a place to leave behind a piece of your former self.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

This popular pitstop lives up to its name.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

This sculpture is intended to reset a person’s creativity.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

The final resting place of the living embodiment of the famous Forest Service symbol.

This is one really big nut.

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

A museum dedicated to the alleged Roswell Incident.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A clear blue swimming hole with hidden caves, still unexplored.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The Grand Canyon of Texas.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

A peculiar forest that was handcrafted for government experiments.

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.