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

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.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

This spectacular track has run continuously since 1882.

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

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

Oddly shaped rock formation, misassociated with a nearby utopian community.

A house carved into a rock in the 1940s.

The fifth-longest natural arch in the world, and the longest outside China.

This roadside stop between Goblin Valley and the Henry Mountains is the perfect location to view some of the region's natural wonders.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

Despite its name, this route in southern Utah offers a heavenly day trip.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

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

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

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

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

Conflicting markers on its floor tell a tale of two city centers in San Antonio.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

Three hundred years of preserved Spanish colonial history in San Antonio.