The final resting place for the remains of 143 Habsburg royalty.

Does this strange mural depict witches battling beneath a penis tree?

Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

Thousands of well-dressed mummies below a monastery.

Water and windows define this defensive Italian well.

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

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

The Pope’s secret escape route.

An Italian hillside ghost town.

A collection of objects supposedly singed by the hands of souls in purgatory.

Ever hear of the Milazzo Cage?

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Rome's semi-secret peephole vista is also a former Crusader stronghold.

One of seven Jewish catacombs in Rome and one of only two open to the public.

Geometry and mystery come together in an epic show of octagonal masonry.

The glowing blue Nymphaeum of Emperor Tiberius.

The sign at the garden gate reads: "These Plants Can Kill."

Ancient snack bar of the Roman Empire re-opened.

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

Virgil's many-mouthed gateway to the underworld.

Pompeii's less famous neighbor is still revealing her secrets.

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

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