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

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

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

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

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

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

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

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

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

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

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

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

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

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

The largest source of fossilized insects anywhere.

Curios, scientific antiques, oddities for sale.

Abandoned silver mine strewn with wrecked and twisted structures.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

When ecosystems collide in the arid Southwest.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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