800px-Peter_Paul_Rubens_060Crop

Detail from Rubens, Het Steen

Detail from Peter Paul Rubens, A View of Het Steen in the Early Morning, c. 1636 (National Gallery, London). This image is in the public domain in the United States because its copyright has expired. Courtesy of Wikimedia Commons: http://en.wikipedia.org/wiki/File:Peter_Paul_Rubens_060.jpg