When ecosystems collide in the arid Southwest.

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

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

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

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

This super steep hike ascends 2,000 feet in less than a mile.

This spectacular track has run continuously since 1882.

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

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

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

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

Possibly the world's only drive-in movie theater with an attached motel.

A recreation of an Old West apothecary full of curios.

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

This hot dog-shaped diner has moved all around Colorado, never been to New York.

Toss a Frisbee through the ruins of this Colorado gold mining town.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

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

A coal fire has been burning underground here since 1896.

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

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

Over 1.3 million confiscated wildlife products fill this macabre menagerie of illegal animal specimens.