Built in the XVI century, it suffered profound changes in the XVIII century. From the primitive plan are the entrance tunnel, the tower and the renaissance cloister.

Dom Dinis ordered these walls and the castle construction, composed by creneled walls, turrets, an enormous keep, ditches and barbican. In 1580 during the Filipe’s occupation, the castled underwent several damages. The castle still preserves thirteen turrets and three doors; one of them is Traição (Betrayal) door. One should point out the square turret, the Palace Cristóvão de Moura ruins and the urban agglomerate inside the fence.

Monumental doorway with a triangular fronton, dated from 1093. The Episcopal Palace was built between the XVII and the XVIII centuries for the Algarve Bishops.

This tower was part of the Palace that was being rebuilt, suffering constant changes to be fully dismantled during the first quarter of the 20th century.