Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

The summer tourists on these cliffs are thousands of seabirds.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

Three columns of volcanic rock shoot out of the ocean.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

In the Middle Ages, villagers would sound this stone trumpet to boost fertility and coax fish to shore.

This large round boulder is said to emit spiritual power, but it may just be magnets.

The largest stone moai on Rapa Nui.

The world's most remote airport.

This was once the center of the Birdman cult, and is now a World Heritage Site.

A fantastical and futuristic temple of light built from nine monumental glass veils.

You can swim in these highly salty, mesmerizingly blue lakes in the Atacama Desert.

This stone complex marks the urban center of a lost civilization.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.