A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

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

A mental health hospital dating back more than 139 years, now features a museum.

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

This interpretive path lets you get up close and personal with dinosaur bones.

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

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

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

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

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

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

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 tea house was a hand-built gift from Boulder's sister city in Tajikstan.

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

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

A little-known hot spring haven right below the highway.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

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

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.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

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