A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

Native Americans built this circle of stones, which was used to predict astronomical events.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

A devilishly named gorge that was a sign of salvation for many pioneers.

A popular rock that acted as a waymarker for American pioneers.

This Wyoming town is fascinated by a particular mythical creature.

Population: 1.

A small Wyoming town is home to the state's oldest-operating soda fountain.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

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

This nearly abandoned town was once a thriving mining community until a series of fires.

All that remains of this once-booming mining town are the ruins of a saloon.

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

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

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

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

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

When ecosystems collide in the arid Southwest.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

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

A tiny nondenominational church harkens back to the days of the first homesteaders in the region.