You don't have to venture far from the port of Naples to experience some of the most visited landmarks above and below the city center best appreciated on a walking tour. This fully guided, 4.5-hour stroll showcases Neapolitan history and culture, provides intriguing photo opportunities, and lets you savor authentic Italian food at a charming seaside pizzeria. Walk from the Castle Nuovo to the Piazza del Plebescito, where the Royal Palace and its formidable red façade capture the eye. You can also focus your lens on the exteriors of the Umberto Gallery, the church of St. Francis, and the Theatre of San Carolos, a UNESCO World Heritage Site. Proceeding into the underground city, you'll walk through the somewhat mysterious-and some say haunted-Galleria Borbonica. Emerging at the seaside, make a stop to snap a picture of the Egg Castle before lunch and your return to the ship.