The only road through the heart of Glacier National Park.

A classic carnival ride that was carved to be untouchable.

See the computer’s history revealed over the course of 20,000 years.

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

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

The world's largest mineral hot springs is home to a herd of bison, a free public bath house, beautiful mineral formations, and a terrifying swinging bridge.

This canyon is named for a unique geologic formation where the river vanishes underground near the mouth of the canyon and reappears farther down.

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

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

Home to Hollywood history and a very special salt crystal.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

Sports history, made in the Arroyo Seco.

This hidden amusement park is a magical escape for kids and kids-at-heart.

The ill-fated plan to reroute the Mississippi so that Union ships could bypass Confederate fortifications on the river bend.

One of the largest publicly funded mural in the country is one city's love letter to itself.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

This small piece of railroad history sits behind the parking lot of a chain grocery store.