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

See six states, pickled freaks, rocks, and antiques.

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

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

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

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

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

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.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

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

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.

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

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

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

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

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

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

Abandoned silver mine strewn with wrecked and twisted structures.

A little-known hot spring haven right below the highway.

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

This spectacular track has run continuously since 1882.

When ecosystems collide in the arid Southwest.

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

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.