Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

A multi-storied adobe complex has been inhabited for more than a thousand years.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

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

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.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

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

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This Old West prison built into the side of a cliff was said to be inescapable.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

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

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

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

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

An artificial crater field that trained astronauts for lunar exploration.

The world's largest military aircraft cemetery.