A cemetery housing wild west legends in South Dakota.

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

The largest self-built castle in the U.S., six decades in the making.

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

One of the smallest towns in the United States.

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.

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

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

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

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

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

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

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

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

The largest source of fossilized insects anywhere.

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

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

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

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

The final resting place of a 19th-century gold prospector and convicted cannibal.

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

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

A downtown park built on top of unclaimed graves.