An Italian hillside ghost town.

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

Richard Luke Concanen never set foot on American soil.

A special area of the National Archaeological Museum of Naples is located inside a metro station.

The first Italian factory to produce locomotives is now a marvelous museum.

An omelette made with over 1,000 eggs may have been prepared when Holy Roman Emperor Charles V visited this monastery.

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

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

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

This Roman amphitheatre was also the location of the first gladiator school.

A rococo room covered entirely in porcelain originally constructed for another royal residence.

The remains of this medieval Roman road and lookout towers dot the rugged coastline of southern Lazio.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

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

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

The old church, buried by the 1784 Mount Vesuvius eruption, is a remarkably well-preserved place where people now pray for the souls of the dead.

For centuries, this large Roman villa remained hidden thanks to the eruption that buried nearby Pompeii and Herculaneum.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

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

This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.

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

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

The oldest volcanology research center in the world.