This sculpture perfectly models the molecular structure of a drug that was never produced.

A natural formation that resembles a camel resting in the New Mexico desert.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

It's easy to see why this eclectic architectural wonder has been dubbed the "Spaceship House."

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

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

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

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

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

This museum offers an actual time machine back through Colorado's past.

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

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

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

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

When ecosystems collide in the arid Southwest.

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