Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

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.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

An acoustic anomaly with a mysterious cause.

A spectacular cave and a beguiling lake.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

These warring psychedelic crags commemorate an unsuccessful military operation.