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

Two creeks flow out of either end of this canyon in opposite directions.

Happen to come across a dead eagle? Send it to America's official dead eagle warehouse.

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

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

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

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

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

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

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

This spectacular track has run continuously since 1882.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The largest source of fossilized insects anywhere.

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.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

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

When ecosystems collide in the arid Southwest.

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.

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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

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

The fifth-longest natural arch in the world, and the longest outside China.