The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

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

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

A recreation of an Old West apothecary full of curios.

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

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

The largest source of fossilized insects anywhere.

Abandoned silver mine strewn with wrecked and twisted structures.

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

When ecosystems collide in the arid Southwest.

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

The largest self-built castle in the U.S., six decades in the making.

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