I spent a week in the Sicilian Syracuse (Siracusa) in September. I'd always thought that the song was about that place until shortly before we went, only to find when I looked into it that it wasn't! If you ever go to Siracusa, stay in Ortigia, the little island connected to the main town by a road bridge. Ortigia is lovely but Siracusa is workaday bordering on rough, though the archeological site with both Roman and Greek amphitheatres is fabulous.