Robot jockeys ride their humped mounts to victory as part of a 21st-century twist on an ancient desert sport.

Natural cathedral designed by Italian artist Giuliano Mauri.

People have been scribbling on this massive chunk of granite for more than 1,500 years.

Crushed coral and crystals give the sand its signature coloration.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Villagers have recycled bomber fuel tanks from the Vietnam War and turned them into very, very strong boats.

An ancient fortified mound raised over the millennia from settlements built one on top of the other.

This Javanese-Hindu temple from the 15th century is unmissable for anyone with even a passing interest in erotic art.

The sacred shrine of the Yazidis.

Elaborate patterns adorn the city's disappearing traditional architecture.

This remarkably well-preserved Incan city managed to survive the conquistadores.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The ancient abodes are a testament to human ingenuity amid harsh climates.

This impressive system of tanks was used to store drinking water as long as 2,000 years ago.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

This likeness of the famous revolutionary is entirely made of recycled scraps of metal.

No one is quite sure of the origins of these idyllic natural hot springs at an abandoned mountain resort.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

The fight to make Bengali an official language started in this stunning university hall.

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

Ancient structures used to make and preserve ice in the deserts of Persia.

Tracking the 1,500-year history of Korea's star cabbage.

This doorless 20th-century elevator doesn't stop or slow down.