Located in the beautiful Baroque Barberini Palace, the National Gallery of Ancient Art contains works of art produced before the year 1800. It includes masterpieces by Andrea del Sarto, Bronzino, Canaletto, Titian, and Tintoretto. But the collection’s most important works are Caravaggio’s “Judith and Holofernes,” Bernini’s “Bust of Pope Urban VIII,” and Pietro da Cortona’s spectacular ceiling fresco “The Allegory of Divine Providence and Barberini Power.”