The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Beautiful views and Roman-style statues on the Italian coast.

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

This medieval Italian town is a sheer (and beautiful) cliffside defense.

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

Virgil's many-mouthed gateway to the underworld.

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

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

A sulfuric hellscape in southern Italy.

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

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

This monumental fountain has moved around the city multiple times.

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

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

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

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

These "anatomical machines" are only one of the many strange items in this Italian crypt.

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

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

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.

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

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