Set between Rome and Naples amid the so-called Ulysses Riviera, gorgeous Gaeta overlooks the beautiful Tyrrhenian Sea. Its history as a resort dates back to Imperial Rome. Nearby sites include the first-century BC mausoleum of general Lucius Munatius Plancus. Its old town is mostly medieval, showcased by narrow alleys, the massive 13th-century castle and the 12th-century Cathedral of Assunta e Sant'Erasmo. For relaxing, lovely and central Serapo Beach is a favored locale.