A hard-to-reach oasis in a desolate corner of Death Valley National Park.

Medicinal spa created with the discharge from a geothermal energy plant.

This Japanese-inspired labyrinth of hot springs is hidden in a Chilean forest.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

This everlasting lightning storm may be the world's largest generator of ozone.

This small primate research island is teeming with playing, fighting wild monkeys.

A remote forest of stone pillars along the Lena river.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Fire meets ice at the southernmost volcano on Earth.

One of Chile's most active volcanoes is riddled with beautiful caves.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

Mysterious rocks that ring musically when struck.

A volcanic fissure over two miles long and up to 70 feet deep.

The world's first and only natural nuclear reactor.

Fossils, railroads, and waterfalls!

Fish raining from the sky are the cause of a yearly celebration in this small Honduran town.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.