This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

This lost city belongs to one of the earliest civilizations in the world.

This shrine is an ode to the region's rich Hispanic heritage.

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.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

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

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

Community owned and operated, this property is home to a diverse set of nudists.

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.

Colorado's only true geyser is hidden within the San Juan National Forest.

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

This naturally-sourced hot spring is now home to a clothing-optional resort.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

At certain times in the fall and winter, the sunlight makes this natural sandstone arch glow.

A colony of Mexican free-tailed bats live under the bridge and take flight at sundown all summer long.

Two geoglyphs that are truly unique to North America.

This Native American settlement dates back to the Pueblo II period.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

An off-the-beaten path cave with an underground lake.

These free-roaming horses were once destined to disappear from the land.