A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

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

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

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

This landmark is a central figure in the Nez Perce origin story.

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

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

In the heart of Brigham Young's promised land sits a festering plot of industrial ruin that has been claimed by society's outcasts.

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

A few dilapidated structures are all that remain of this deserted former silver mining town.

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

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

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

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

See just what life was like in a 19th-century prospecting town.

One man's ambition created this psychedelic log home.

An Idaho legend carved out a cave village with his own two hands.

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.

These century-old beehive-shaped kilns were built to produce charcoal for nearby mines.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.