One day
Arrive at the Plaza del Azoguejo and take in the aqueduct from below, then climb Calle Real into the old town for the cathedral and a wander of the Plaza Mayor. Have a cochinillo lunch in a mesón, then walk the ridge west to the Alcázar and climb its tower for the panorama. Late afternoon, drop down through San Lorenzo to the Eresma and cross to the Mirador de la Pradera de San Marcos for the castle view, back up for the floodlit aqueduct after dark.