A fountain standing as a testament to a doomed alliance.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

These eight mummies are the best-preserved human remains ever discovered in North America.

Greenland's first shopping mall also hosts the country's government.

The largest ski jump in the Western Hemisphere hasn't hosted skiers in decades.

A larger-than-life version of the hat beloved by hunters, outdoorsmen, and Holden Caulfield.

On the shores of Lake Superior, a small group of monks makes sacred sweets.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

A set of ancient rock engravings that date back to the Neolithic period.

This former cathedral is now a bustling library packed with students and pigeons.

A century-old stone hermitage overlooks this remote pass in the Hoggar mountains, surrounded by a landscape of eroded volcanic cores.

This mountain is one of the largest in Scotland but is better known for its hollow insides.

These quaint cottages feature built-in signaling devices for fishermen.

A doctor had this large tub carved into rocks to facilitate easier seawater bathing.

A city built from mud and known as the "Manhattan of the desert."

One of the largest mud-brick structures in the world.

The tallest minaret in Yemen is 150 feet high and entirely made of mud.

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

A towering monument to war, located on a beautifully peaceful hill.

Berlin's old airport.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.