This biography presents a remarkable vision of Spanish society at the beginning of the 13th century by exploring the life of Berenguela of Castile (1180-1246), a queen who dominated public life for over forty years. Born at a time when the centers of Christian power were formed, Berenguela provided royal leadership in a crucial period of Iberian history. Within the context of contemporary studies of female power throughout history, Salvador Martínez brings to life Berenguela, a queen who, through her wisdom and resolve, transformed the Iberian political and cultural scene for years to come.