Home to a timed geyser created by complete accident.

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

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

Supposedly Satanic numbers adorn this preserved submarine sail.

Home to the deepest rift anywhere on Earth.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

More than 200 unconventional musical instruments that anyone can play.

Resonating tubes make music from highway overpass.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The only road through the heart of Glacier National Park.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

The remains of an early 1900s dude ranch that operated until the 1970s.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The start of the group that straightened the teeth of a nation.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

Five candy-colored villages on the Italian Riviera.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

These haunting ruins belong to an ancient village that once had one hell of a view.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.