Alcázar de San Juan (often called simply Alcázar or Alcázar de Consuegra) is a town and municipality in the province of Ciudad Real. It is located in the plain of La Mancha. Its name is taken from an old moorish fortress, which was afterwards garrisoned by the knights of St John (San Juan in Spanish language). Much of the action of Cervantes' Don Quixote takes place near Alcázar. Visitors can see its famous old windmills.