This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

A clear blue swimming hole with hidden caves, still unexplored.

A collection of huge, site-specific sculptures sitting in the Montana woods.

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

A rapidly disappearing glacier filled with extinct grasshoppers, perfectly preserved in the ice.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

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

A recreation of an Old West apothecary full of curios.

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

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

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

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

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

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

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

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

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

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

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

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

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

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.