When it opened on November 19, 1819, the Prado Museum, in Madrid, consisted entirely of works from the Spanish royal collections. Numerous treasures have been added since opening day, but the unique strengths of the Prados collection can still be traced to that original core of remarkable works-many acquired or commissioned from the artists themselves during the sixteenth, seventeenth, and eighteenth centuries. The Prado is internationally renowned for its unsurpassed collection of masterpieces by Diego Velázquez, Francisco de Goya, Hieronymus Bosch, El Greco, and Peter Paul Rubens. As this richly illustrated little volume makes clear, it also possesses a brilliant collection of paintings and drawings by other artists throughout Europe as well as fascinating decorative arts and notable sculptures.