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

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

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

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.

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.

When in Idaho, sleep in a giant potato.

This museum glorifies the humble potato.

Home to the deepest rift anywhere on Earth.

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

Built around 1723, this is the oldest surviving home in the U.S.'s oldest colonial city.

America's first wax museum opened in 1948.

Only through the lens of a microscope can visitors see the true treasures inside this museum.

The site of Martin Luther King Jr.'s arrest as he attempted to have lunch.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

A lion given to the prime minister somehow got stuffed and sent to Florida.

St. Augustine's record-setting narrow street was designed to protect against pirates.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

It's a pretty creepy lock-up.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.