Castillo de la Zuda

Borja, Zaragoza, Spain, Spain

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Castillo de la Zuda is a Muslim-origin fortress atop a hill overlooking Borja in Zaragoza province, Aragon, Spain, with a rectangular layout adapting to the terrain and dominating the village below.

Controlled by the Banu Qasi during the Islamic invasion, it was conquered by Alfonso I of Aragon in 1124, briefly governed under Navarrese protection, then returned to Aragon after Templar handover, serving as a key stronghold against Castile and Navarre through centuries of sieges and ownership shifts including unionists in 1288 and Castilians in 1362.

Passing to private lords like Beltrán Duguesclin before reverting to royal hands in 1443, it saw fortification dismantling under Philip II, leaving evocative ruins designated a Bien de Interés Cultural since 2006 amid Borja's historic core.