Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

This remote Colorado canyon is home to the second-largest collection of natural arches in the world.

This marker identifies the location where three states converge.

Two creeks flow out of either end of this canyon in opposite directions.

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

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

A river runs through this remote valley in a very unexpected way.

A museum dedicated to the mysterious cryptid.

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

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

Even in death, he's still your huckleberry.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

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

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 once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

This spectacular track has run continuously since 1882.

When ecosystems collide in the arid Southwest.

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

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

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.