Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

Traditional 11th-century outdoor tannery.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Founded as a refugee camp, now a popular tourist spot.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

This fortified sand barrier dividing a contested territory is the longest minefield in the world.

The world's largest ship graveyard is the product of decades of corruption.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

Ancient Manuscripts showcase the civilization of West Africans during the Middle Ages.

One of Western Africa's oldest mosques, this Timbuktu icon has stood for nearly 700 years.

The central mosque of this Mali town is entirely built from mud.