The walls and streets of the ancient city are peppered with penises.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

For decades, vendors have sold clothes once worn by American soldiers who stormed Italy in the 1940s.

Before the more famous Royal Palace of Caserta, the king of Naples first commissioned this overlooked residence.

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

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

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

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

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

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

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

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

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

This monumental fountain has moved around the city multiple times.

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.

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

A sulfuric hellscape in southern Italy.

A mushroom-shaped outcropping that has come to be the symbol for an entire town.

A snow-white church overlooking the wonderful Tyrrhenian Sea.

This stately palace, first built in the 16th century, was converted into a prison in 1830.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

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

The Bourbon royal family had this unique octagonal hunting "cottage" built on a tiny islet in Lake Fusaro.