Castelo de Alcoutim

Alcoutim, Portugal, Portugal

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Castelo de Alcoutim in Alcoutim, Portugal, was initially developed in the 13th century during the Reconquista, when King Sancho II captured the area from the Moors around 1240 and ordered its reconstruction to defend the frontier along the Guadiana River bordering Spain.

King Dinis further fortified it in the early 14th century, granting a charter in 1304 to the Order of São Tiago, while later monarchs like Ferdinand (site of a 1371 peace treaty with Castile), John II, and Manuel I added rational bastions, artillery platforms, and Gothic elements during ongoing border tensions.

Rectangular in schist stone with a dominant hilltop position, it played roles in the 1640 Restoration War before declining into civilian use like a slaughterhouse by the 18th century; restorations since the 1960s house an archaeological museum today.