[1] Its construction occurred during the reign of King D. Dinis, but there is evidence that the zone may have had a human presence prior to its formal occupation.

[1] The early medieval fortress was not likely a large project, but a simple plan of necessity carried out during the 16th century.

[1][2] Around 1509, Duarte d' Armas sketched the layout of the fortification, highlighting a long curtain of walls, without any tower, and accessible by a single gate.

[2] On 1 June 2012, the fortification was included in its respective Special Protection Zone (in announcement 12 203/2012, Diário da República, Série II, 107), classifying the structure as a Monumento de Interesse Público (Monument of Public Interest).

[2] The interior of the fortification is marked by a rectangular, sepulchral ark of stone with one of the faces sculpted with vegetal elements and the cross of Christ in its centre.