There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

Historic medieval fortified city in southwest France.

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

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

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

This vast masterpiece of Moroccan architecture spreads across 20 acres.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

An abandoned horror film set sits eerily along a highway through Hollywood's "door to the desert."

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

The remains of a magnificent medieval fortress that was the capital of a vast empire.

In this desolate valley resides a gorgeous set of rocks sporting a technicolor design.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This magical-looking island is notorious for the misfortunes suffered by its owners.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

An eerie, little-known Neapolitan museum filled with preserved human remains.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

The relics of dozens of martyrs are stored in a single chapel.

A surreal botanical garden with an even more surreal tour guide.