Anatomical cabinet holds unexpected treasures.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

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

Romans built the world's tallest artificial waterfall in 271 BC.

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

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

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

Abandoned medieval hill town.

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

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

This 16th-century monastery has been turned into a surrealist architecture compound.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

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

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

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

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