Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

A seemingly simple canyon that was the backdrop to a number of famous movies.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

This super steep hike ascends 2,000 feet in less than a mile.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

Spanning over 10,000 square miles, this ancient salt pan is one of the largest on the planet.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

For hundreds of years, participants in this Japanese festival have been making babies cry to ward off demons.

On Japan's Tashirojima Island, cats are king.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A magical place that lets you play in and explore the world of Studio Ghibli.

World's first "penitentiary," meant to be humane, drove men insane.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Rippling sand dunes frozen in the Arizona rock.

Dramatic river bend surrounds a natural red-rocked pedestal.

Hot springs monkey spa in the middle of Hell's Valley.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

This massive blockhead sculpture hides an entire library.