The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

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

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

When in Idaho, sleep in a giant potato.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Natural rock water slides hidden in the remote forests of northern Idaho.

Home to the deepest rift anywhere on Earth.

A once celebrated industrial wonder now lurks in a quiet corner of Flathead Lake.

A collection of 16,000 antlers crammed beautifully into a small shed.

A collection of huge, site-specific sculptures sitting in the Montana woods.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

These giant metal horses graze on a hilltop near the Montana highway.

"Polynesia on the Plains."

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

Mining town from the late 1890s, once home to Calamity Jane.

This amazingly preserved Gold Rush town is a historian's dream.

These fantastically named natural pools look like something out of a Scottish myth.

An acoustic anomaly with a mysterious cause.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.