In the most westerly part of the Gulf of Naples, Ischia is the largest neapolitan island.
Formed by six districts, Barano, Casamicciola, Forio, Ischia, Lacco Ameno e Serrara Fontana,  has acquired International fame as a tourist destination thanks to its numerous thermal and thermo-mineral springs, result of the island's volcanic origins. The healing properties of these waters have been known since Roman times. Sites to visit include the Church del Soccorso, the Church of St. Francesco, the Church of St. Maria di Loreto, the Tower. At Ischia tourists should be sure to see the Argon Castle, the Cathedral, the Church of St. Maria di Portosalvo, the Sea Museum, the Museum of Arms, Armours and Instruments of Torture, the Island Museum, the Bishopric, and the Church of St. Pietro a Pantaniello. At Lacco Ameno one finds the Church della Marina, the Pithecusae Archaeological Museum and the Sanctuary of St. Restituita. 
From the top of Serrara Fontana visitors can admire splendid panoramas and walk through the narrow and picturesque lane of S. Angelo.