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

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

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

Outsider Art Community.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

The world's first commercial spaceport is a disappointment of cosmic proportions.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

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

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

A unique geological area spiked with wind-carved rocks that resemble teepees.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

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

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

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

This museum offers an actual time machine back through Colorado's past.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

A collection of over 15,000 zines works to preserve DIY publishing culture.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Abandoned silver mine strewn with wrecked and twisted structures.