The outstanding private collection of the noble Borghese family went public when they lost their fortune in the late 1800's; today it's the world's most perfect small art museum. The works here are immediately impressive and provocative, from ancient Roman mosaics of gory amphitheater scenes to the topless statue of Pauline Bonaparte by Canova. Bernini's astonishing marble sculptures, including David, Apollo and Daphne, and Rape of Persephone, are masterpieces of baroque tension and show off the mind-boggling chisel skills of the artist. Rounding out the collection are a slew of high-keyed Caravaggios, including David with the Head of Goliath; Correggio's delightful (and racy) Danae; and Titian's iconic Renaissance painting Sacred and Profane Love. The Borghese Gallery has timed entrances with limited tickets so advanced reservations are obligatory.