Romantic Naples, two hours south of Rome, is the largest city in southern Italy. It has some of the world's best opera houses and theatres, and is often called an open-air museum, because of its many historic statues and monuments. Join families on promenade as the sun sets on the Bay of Naples. View finds from Pompeii and Herculaneum, destroyed by Mount Vesuvius in A.D. 79, at the Museo Archeologico Nazionale or revel in the art and architecture of Museo Cappella Sansevero, built in the late 1500s.