The sacristy of this church contains remains and relics of members of the Aragonese royal family.

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

This monumental fountain has moved around the city multiple times.

A rococo room covered entirely in porcelain originally constructed for another royal residence.

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

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

The remains of the left arm of the levitating philosopher-saint are kept in a 13th-century Neapolitan basilica.

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

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

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

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

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

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

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

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

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

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

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

This floating cinema brings new meaning to the phrase "going out" to the movies.

Parts of this sprawling temple complex are deteriorating, but its founder’s body remains intact.

This Khmer-era temple includes a lintel that was stolen and displayed at the Art Institute of Chicago for years before returning to Thailand.