After this former brothel closed, its interior remained almost frozen in time.

The mayor made the declaration in 2004.

Home to a timed geyser created by complete accident.

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

Jail from the 19th century that was built by inmates.

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

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

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

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

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

This underground cave located in the most barren reaches of Idaho is filled with ice year-round.

A lava tube cooled to form this long tunnel that stays chilly even at the height of summer.

A former sanitarium where soldiers were sent to recover in the healing waters of hot springs.

A museum dedicated to the history and art of staying clean.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

An ill-fated attempt to grow wheat in the sagebrush steppe of northeastern Nevada.

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.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

When in Idaho, sleep in a giant potato.

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

This combination shop and museum is filled with curious items and artifacts.

This museum glorifies the humble potato.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.