The Tower of La Calahorra rises up at the south of the Roman bridge, the far end from the city centre. It is a fortified gate originally built by the Moors (Almohads) and extensively restored by King Enrique II of Castile in 1369 to defend the city from attack by his brother Pedro I the Cruel from the South. It was origionally an arched gate between two towers. Enrique II added a third cylindrical shaped tower connecting the outer two.