The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

Toss a Frisbee through the ruins of this Colorado gold mining town.

Final resting place of a 19th century gold prospector and convicted cannibal.

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

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

A fake mine that was made using real mining techniques which is also used as a community center.

There are eight natural springs around town, each with a slightly different taste.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

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

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

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

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

A mental health hospital dating back more than 139 years, now features a museum.

The remains of the dam that unleashed a 15-foot wall of water on Denver.

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

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

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

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

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

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

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