When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

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

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

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

A technicolor place of worship for Elevationists.

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.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

This set of hot springs also comes with fantastic views.

Three generations of intrepid collectors display their curious artifacts in a homemade museum right next to the caves they discovered.

This landmark is a central figure in the Nez Perce origin story.

Rare and gorgeous birds abound in this protected wildlife sanctuary.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

Home to a timed geyser created by complete accident.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

A wild west land agreement was etched right onto this historic Idaho stone.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

When in Idaho, sleep in a giant potato.