Macabre museum devoted to historical Viennese murders.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A forgotten graveyard lost in the tangles of an overgrown garden.

Time stands still at this serene burial ground in the center of Budapest.

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

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

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

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.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

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

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.

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 amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Richard Luke Concanen never set foot on American soil.

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

This medieval city gate is now a blend of the past and the modern world.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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