Classified a National Monument, since 20 June 1924, three towers remain within the cordon of walls, the remnants of the town hall located within the structure.

[1] The Romans first occupied the site, then the remnants of a local castro around the 2nd century, and transformed it into a defensible military fortification and politico-administrative center.

[1] In 1422 or 1462, Henrique de Meneses, 1st Count of Loulé re-built the towers and walls of the castle.

[1] The site was taken-over by the Instituto Português do Património Arquitetónico, on 1 June 1992, under Decree 106F/92 (Diário da Republic, Série IA, 126).

[1] This document was supplemented on 18 January 2013 (Diário da República, Série II, 13, Anúncio de Procedimento 232/2013) relative to the remodeling of the Praça D. Afonso III, Rua D. Paio Peres Correia and Largo das Bicas Velhas (Chafariz).