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

Smack-dab in Campania’s volcanic fields, this scenic lake was once thought to be the gate of hell.

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

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

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

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

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

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.

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

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

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

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

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

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

These bronze horses on the gates of the Royal Palace of Naples were a gift from a Russian tsar.

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

The world's most elegant power lines.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The unexpectedly beloved remnants of a controversial thermal power plant.