This cave column thousands of feet below the earth’s surface is rightly named for one of the most colorful park rangers in history.

The oldest continuously occupied public building in the United States.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This is one really big nut.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

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

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

More than 100 steam and diesel locomotives bring Colorado’s rail heritage to life.

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

A picturesque (all-natural!) beach in a landlocked state.

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

A mural of the Virgin of Guadalupe painted on the rock wall by canyon's religious namesake.

Take a self-guided tour through one of Colorado's most elevated mining districts.

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

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

Unlike most arches, this geological oddity formed in a volcanic dike.

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