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

Rare and gorgeous birds abound in this protected wildlife sanctuary.

Home to the deepest rift anywhere on Earth.

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

A museum dedicated to the history and art of staying clean.

An entire town preserved as a historic landmark.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

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

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

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

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

There are eight natural springs around town, each with a slightly different taste.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

This super steep hike ascends 2,000 feet in less than a mile.

This enigmatic building features numerous architectural styles.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

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