When in Idaho, sleep in a giant potato.

A railroad lift bridge that was only lifted once and became obsolete before construction was finished.

It is the only marker for one of the most famous hate crimes in American history. There are no other memorials for him in the entire state.

Dance on a hand-hewn log floor padded with bouncy boxcar springs at a saloon built in 1883.

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

The only retired U.S. nuclear missile silo that is open to the public.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

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

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

An architect's childhood fantasy treehouse made real.

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

One man's ambition created this psychedelic log home.

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.

Native Americans built this circle of stones, which was used to predict astronomical events.

These strange large stones served as a campsite and lookout post for generations of Native Americans.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

Once named the “world’s oldest gas station” due to its unusual construction material.

Population: 1.

A small Wyoming town is home to the state's oldest-operating soda fountain.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

This marker identifies the location where three states converge.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.