The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

Crushed coral and crystals give the sand its signature coloration.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

A forgotten "city of water" underneath the famous Trevi district.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

An Italian hillside ghost town.

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

This giant middle finger statue sends an unambiguous message to Italy's bankers.

The glowing blue Nymphaeum of Emperor Tiberius.

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

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.

Stalactites and stalagmites in a beautifully lit cave.

Thousands of well-dressed mummies below a monastery.

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

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

A submerged archeological park still holds the wonders of a Roman Sodom.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

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

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

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

This 1st-century CE Roman bath sits under a carpark.