A house carved into a rock in the 1940s.

A multi-storied adobe complex has been inhabited for more than a thousand years.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

An experimental, automotive replica of Stonehenge.

This erect, phallic geological spire wasn't always named so domestically.

When ecosystems collide in the arid Southwest.

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

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

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.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

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

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.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

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

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

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

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

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