This is one really big nut.

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

This site honors the end of a 100-year boundary dispute between the United States and Mexico—all started by a river's shifting course.

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

Mysterious glowing orbs float through the desert night.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

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

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

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

Even in death, he's still your huckleberry.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

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

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

Above Breckenridge, a destructive mining technique sits sunken in a small pond.

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.

This iconic science fiction house still looks like something from the future.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.