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

A recreation of an Old West apothecary full of curios.

When ecosystems collide in the arid Southwest.

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

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

These towering cliffs crystalize each winter, forming sheer walls of ice that are open for climbing.

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

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

Even in death, he's still your huckleberry.

Take a dip in the world's largest mineral hot springs pool.

All that remains of this once-booming mining town are the ruins of a saloon.

This distinctive snowfield on the slopes of a Colorado fourteener has several legendary origin stories.

This nearly abandoned town was once a thriving mining community until a series of fires.

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

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

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

This super steep hike ascends 2,000 feet in less than a mile.

This vintage theme park is peak Christmas kitsch—and it's open all summer.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This hot dog-shaped diner has moved all around Colorado, but has never been to New York.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.