This Wyoming town is fascinated by a particular mythical creature.

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

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 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.

Locally known as the "Onion” and the "Egg Beater,” Casper’s most recognizable buildings are beloved local landmarks to many, and eyesores to others.

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

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

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

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

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

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

The beginning of the historic Iditarod Trail connecting the Alaskan cities of Seward and Nome.

The simple log cabin of a famed loner and naturalist stands preserved as a symbol of the ultimate DIY lifestyle.

The ghostly remains of what was once the world's richest copper mine.

In the middle of the Alaskan wilderness, lies a train trestle to nowhere.

Open day and night, a church with three pews and Bibles.

The northernmost international land border crossing in the United States.

At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

Permanent exhibit reminds visitors of the Exxon Valdez.