The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

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

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

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

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

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

When ecosystems collide in the arid Southwest.

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

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

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

The largest source of fossilized insects anywhere.