Side by side with the churches, palaces, and streets that form Naples's dense urban fabric, a parallel hidden city unfolds, made up of archaeological remains, crypts filled with skulls, amazing cloisters, streets, and tunnels dug over the centuries into the soft tufa volcanic rock.

Your journey to discover this fascinating—yet often neglected—side of Naples starts from Via dei Tribunali. You will then head to the Forum, whose monumental ruins survive in the underground sections of the Basilica of San Lorenzo Maggiore. After a stop at the underground cemetery of the church dedicated to the souls in Purgatory, you will go to the monastery of Santa Chiara, built in the fourteenth century on the site of Roman baths.

Then explore Via San Gregorio Armeno, a famous street where you can only find shops selling the celebrated "presepe," or elaborate sculpted cribs, as well as Spaccanapoli. This ancient street traverses the old city centre.

Duration: 3 hours