The Puerta de San Vicente (Gate of St Vincent) is a monumental gate with very strong turrets flanking the entrance. It is clearly of Roman origin since foundations of two earlier towers have been found at the base. There is also a verraco (animal sculpture) located at the gate and another one that has been moved. This suggests that the gate may have had this type of sculpture on both sides. Two large square turrets were then built and later covered by the semi-circular turrets we see today.