See massive fossils that are over 200 million years old in northeastern Arizona.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

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

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

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

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

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

This historic national park is covered in the stunning ruins of red rock pueblos.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

When ecosystems collide in the arid Southwest.

See six states, pickled freaks, rocks, and antiques.

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

The largest source of fossilized insects anywhere.

This erect, phallic geological spire wasn't always named so domestically.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

Abandoned silver mine strewn with wrecked and twisted structures.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

A popular rock that acted as a waymarker for American pioneers.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.