A river runs through this remote valley in a very unexpected way.

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

In the early 1900s, hundreds of Black Americans found opportunity in this now-abandoned rural community.

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

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

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

This iconic science fiction house still looks like something from the future.

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

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

Community owned and operated, this property is home to a diverse set of nudists.

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

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

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

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.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

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

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

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

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

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

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

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