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

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

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

This small, but long-running hobby club has built one of the largest model rail lines in the US.

When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

An old World War II hangar holds 20 vintage aircraft and the rare opportunity to take a ride in a 1940s warbird.

A small, fascinating fire museum hidden in plain sight in an administrative building.

This rare, carefully curated collection showcases the history of neon inside a grandiose Elks lodge.

"Enter and be entertained or annoyed by Dada in Walla Walla."

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

New Plymouth, Idaho is the only U-shaped town in the United States.

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

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

A miraculous natural phenomenon known as "the spring that breathes."

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

First planned industrial community in the United States.

An abandoned observatory in the middle of the Illinois prairie.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

This bridge was constructed from the remains of the first Ferris wheel.

Meant for a railway that was never built because of the Great Chicago Fire, these piers still stand nearly 150 years after they were installed.

An avant garde art museum at the University of Chicago.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

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

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.