One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

An impressive waterfall nestled in the cliffs of Idaho's Snake River Canyon.

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

Boise State's stadium was the first non-green football field in the world.

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

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

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

Three generations of intrepid collectors display their curious artifacts in a homemade museum right next to the caves they discovered.

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

This historic Idaho island is home to a strange timeshare museum, a homemade mini-golf course, and an outhouse named Aunt Fanny.

This oddity shop contains everything from antique tools to a human skeleton.

This pop-culture shop also offers the chance to become part of their favorite tv show or movie.

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

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

Home to a timed geyser created by complete accident.

The mayor made the declaration in 2004.

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

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

A wild west land agreement was etched right onto this historic Idaho stone.

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

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

A black cottonwood gets a second life as a home for books.

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

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.