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

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

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

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

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

The largest source of fossilized insects anywhere.

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.

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

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

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

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Even in death, he's still your huckleberry.

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 clock that sets them all.

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

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