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.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The castle that provided the setting for much of 'Monty Python and the Holy Grail' is now a pilgrimage site for fans.

An unpaid bill, a stolen stone, and a famous fashion designer rest peacefully alongside a heroine of Highlands history.

The ruins of this magnificent Scottish castle blend both Gothic and Renaissance architectural styles.

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

The oldest operating pharmacy in the world features 800-year-old recipes.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The yawning maw of this pagan visage is said to bite off the hands of liars.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.