Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

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

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

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

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

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

Even in death, he's still your huckleberry.

This spectacular track has run continuously since 1882.

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

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

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

The largest source of fossilized insects anywhere.

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

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.

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

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

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

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

Abandoned silver mine strewn with wrecked and twisted structures.

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

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

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

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