UNESCO-protected ancient burial ground.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

An abandoned saucer-shaped monument in the Bulgarian mountains.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

The oldest known university in the world is in Fez, Morocco.

FDR's Art Deco hospital tower was hopelessly inefficient.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The first museum in the world devoted to sexual gadgetry.

The last remaining predreadnought battleship in the world has been a museum for nearly a century.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A Roman-style column in Oregon hides a spiral staircase inside.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

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

Traditional 11th-century outdoor tannery.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

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

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

A fortified city, home to a remaining population of five families

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

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

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.