Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

This enigmatic building features numerous architectural styles.

This memorial pays homage to Pueblo's four Medal of Honor recipients.

This historic stone barn is the former home of legendary cattleman Charles “Lonesome Dove” Goodnight.

Inside this casino, visitors are treated to slot machines and a rare German Christmas pyramid.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

A mental health hospital dating back more than 139 years, now features a museum.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

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

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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

When ecosystems collide in the arid Southwest.

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

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

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

The largest self-built castle in the U.S., six decades in the making.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.