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

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

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

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

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

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

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

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

The largest source of fossilized insects anywhere.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

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

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

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.

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.

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

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

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

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.

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

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.