The shrine of Our Lady of Guadalupe, patroness of Mexico, is the focal point of one of the greatest pilgrimages in the Western hemisphere. In 1531, the Virgin Mary appeared to an Indian shepherd, Juan Diego, on the hill of Tepeyac, formerly the site of a temple dedicated to the Aztec goddess Tonatzin. The Virgin requested that a church be built in her honor on the hill and, as a sign for the bishop, she filled Juan Diego's cloak with roses. When he presented himself to the bishop a painted image of Our Lady, which is the basis of Posada's print, miraculously appeared on the cloak.