GUIDO RENI, 1575-1642, Kimbell Art Museum, Fort Worth. Underappreciated in the modern era, Reni is restored in this 50-painting show to the high rank that earlier centuries accorded him as a luminous colorist and elegant stylist. Through May 14.
RICHARD DIEBENKORN: WORKS ON PAPER, Los Angeles County Museum of Art. Some 180 works -- more than one-third of them never before publicly exhibited -- by a contemporary master in his first comprehensive show of drawings. Through May 7.
ROBERT ADAMS: PHOTOGRAPHS OF THE AMERICAN WEST, Philadelphia Museum of Art. A tribute to the chronicler of the imperiled landscape. In the...