Castle of Elvas

The Castle of Elvas is a medieval military fortification in Portugal, in the civil parish of Alcáçova, municipality of Elvas, part of a first line of defense in the Portuguese Alentejo, in conjunction with the military forts of Ouguela, Campo Maior, Olivença and Juromenha.

Between the 8th and 12th century Muslim forces occupied Elvas, resulting in the construction of the fortress. It was briefly conquered by forces loyal to Afonso Henriques around 1166, an action that was repeated in successive years with Moorish capture, and recapture, of the strategic point. In 1200 Sancho I encircled the citadel, and his successor, Sancho II made a tentative attempt to capture Elvas in 1226, at the same time Alfonso IX of León was trying to take Badajoz: although concerted, it was unsuccessful. This was followed in 1228 by another attempt, also unsuccessful, until 1230, after the castle and surrounding territory was abandoned by Muslim forces, who had received word that Alfonso IX had reached and was threatening Mérida.

Wikipedia