Enormous statue of the Emperor of the Mongols.

Prowl through this sprawling bazaar under a massive Soviet-era dome for delicious eats.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

South Africa's postal service began with a letter left in a boot beneath this tree.

A sign marks where the two bodies of water meet.

An enormous public square and parade ground built to celebrate Ghana's independence.

A giant chameleon, with a fascinating purpose.

Africa's Venice on stilts.

Dozens of snakes are housed and worshipped within the walls of this Vodun temple.

A monument to the more than one million enslaved Africans deported from the port of Ouidah.

In a narrow river valley just north of Beirut, Lebanon, is a chronicle of human history unlike anything else in the world.

In the 16th century, a Franciscan monk pulled off a construction miracle by building a Roman-style aqueduct to save the town of Otumba, Mexico, from certain death.

Also known as the Great Mosque of Damascus, this is one of the world's largest and oldest mosques.

3D war panorama in Damascus built with help from North Korea.

One of the oldest and largest castles in the world.

Mysterious lost empire of the Silk Road.

Only a handful of these gorgeous historic waterwheels remain but even those are in danger from local unrest.

Ruins of the Crusaders' headquarters.

One of the world's best-preserved Roman amphitheaters is also one of the most unusual; it's made of black volcanic rock.

The northernmost point of continental Africa—or is it?

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

Thermal springs underneath the seabed provide the heat and bubbles for these beachside natural hot tubs.