In Tucson a giant metal snake helps pedestrians cross a busy highway.

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

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

What is the Thing?

A spiritual vortex among the red rocks in Sedona.

An urban laboratory.

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

The symbol was surreptitiously built into the river bank by German prisoners of war.

A museum devoted entirely to the rattlesnakes and snake-related art.

A sprawling collection of over 106,000 toys from around the world.

"I did this all while you were watching TV."

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

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

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

A museum dedicated to the alleged Roswell Incident.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

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

The most magnificent bottle house in a town strangely full of them.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

An exotic wildlife habitat right off The Strip.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

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

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.