This sidewalk tribute honors Colorado's great culinary creation.

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

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

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

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

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

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

Abandoned silver mine strewn with wrecked and twisted structures.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This spectacular track has run continuously since 1882.

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

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

When ecosystems collide in the arid Southwest.

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

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

A technicolor place of worship for Elevationists.

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

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

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.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

The tiniest tiki room in San Diego.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

Every weekend, people gather here for a brief chance to see their loved ones on the other side of the United States–Mexico border.