From Wikipedia: Porto Venere is a town located on the Ligurian coast of Italy in the province of La Spezia. It comprises the three villages of Fezzano, Le Grazie and Porto Venere, and the three islands of Palmaria, Tino and Tinetto. In 1997 Porto Venere and the villages of Cinque Terre were designated by UNESCO as a World Heritage Site. Among the natural places in the Porto Venere is the famous sea caves Byron (Cala dell’Arpaia), Azzurra or Blue Cave (semi-submerged) and Tinetto; the cavity of the Doves and the wall of Tino, the shoal of Dante and Small and Big creeks. The Byron’s cave, named after the English poet George Gordon Byron in this place that drew inspiration and meditation for his literary works, it is located at the spur of rock below the church of St. Peter and the old defensive position, the marine cave has a minimum depth of five meters and a maximum of twenty along the side. Boats are available from here to Cinque Tere.