When your cruise ship docks at Civitavecchia, embark on a private full-day shore excursion to Tivoli — a suburb of Rome known for its healing thermal waters and World Heritage-listed palaces. See where the ancient Roman Emperor Hadrian lived at the remarkable ruins of the 2nd-century Villa Adriana, where you can stroll the sprawling complex of Egyptian- and Greek-inspired temples and royal residences. In the afternoon, tour the 16th-century palace and gardens of Villa D'Este for a glimpse into the magnificent style and engineering of the Italian Renaissance.