Architectural monsters are devouring this palace's every door and window.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A 16th-century horror show built in a lovely Italian garden.

These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

A phallic shrine to a princess goddess in Krabi, Thailand.

A battle between nature and architecture in the Cambodian jungle.

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.

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.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

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

Traditional 11th-century outdoor tannery.

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.

The final resting place of the poets Shelley and Keats.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A massive marble foot is tucked away in a small alley near the Pantheon.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

A huge enchanting public park just outside the ancient walls of Rome.