This razorback ridgeline has doubled as a scenic drive since the early 1900s.

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

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

When ecosystems collide in the arid Southwest.

Possibly the world's only drive-in movie theater with an attached motel.

A house carved into a rock in the 1940s.

Legends surround this jagged rock formation in the New Mexico desert.

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.

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