With European and American works dating from the Renaissance up to the 20th century, the art collections at this museum are even more extensive and diverse than those of the Tucson Museum of Art. Tintoretto, Rembrandt, Picasso, O’Keeffe, Warhol, and Rothko are all represented. Another highlight, the Retablo of Ciudad Rodrigo, consists of 26 paintings from 15th-century Spain that were originally placed above a cathedral altar. The museum also has an extensive collection of 20th-century sculpture that includes more than 60 clay and plaster models and sketches by Jacques Lipchitz.