At the time of its completion, it was the tallest dam in the world.

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

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

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

This Wyoming town is fascinated by a particular mythical creature.

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

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

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

A miraculous natural phenomenon known as "the spring that breathes."

An architect's childhood fantasy treehouse made real.

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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

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

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

A beautiful geyser under environmental threat.

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

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

Jail from the 19th century that was built by inmates.

Almost all that remains of a town dedicated to supporting the First Transcontinental Railroad.

The first motion picture theater in southern Utah, reimagined and renovated as an arts hub.

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

These tall, red sandstone pinnacles outside Moab are often forgotten amid their more famous neighbors.