This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

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

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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

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

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

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

This town is home to the world’s largest arch constructed entirely of elk antlers.

Home to the deepest rift anywhere on Earth.

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

Boise State's stadium was the first non-green football field in the world.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

When in Idaho, sleep in a giant potato.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

A vertically floating hemlock controls the waves and weather at Crater Lake.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The arch that celebrated the completion of the Lincoln and Victory highways.

The colossal cartoon man stands outside a Nevada museum.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.