This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

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

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

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

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

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

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

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

A downtown park built on top of unclaimed graves.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

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

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

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

An annual festival celebrating Colorado's most famous frozen corpse.

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.

The largest source of fossilized insects anywhere.

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

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

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

When ecosystems collide in the arid Southwest.