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.

Community owned and operated, this property is home to a diverse set of nudists.

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

A collection of over 15,000 zines works to preserve DIY publishing culture.

A downtown park built on top of unclaimed graves.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

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

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 largest source of fossilized insects anywhere.

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

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

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

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

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

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

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.

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.

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

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

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