This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

Birdhouses, peacocks, animal sculptures, and a graveyard are all found along this eclectic nature trail.

It was once used as a classroom to teach mining skills to local high school students.

The mayor made the declaration in 2004.

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

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.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

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.

What remains of the summer palace of King Kamehameha III.

A Hawaiian stairway to heaven—that you can't climb.

A Japanese pilot crash-landed on this Hawaiian island after the Pearl Harbor attack and terrorized locals for a week.

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

A controversial memorial at the place where Captain Cook met his violent end.

This WWII plane died a quiet death, and is now a garden eel playground.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

This blowhole is supposedly caused by a trapped monster.

This legendary urban waterfall creates a dazzling display of rainbows.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.