Castillo de Fraga stands as a significant 11th-century fortress in Fraga, Aragon, representing multiple layers of historical occupation spanning from Roman through medieval times. The castle's remains are uniquely intertwined with the Church of San Miguel, a Gothic structure built directly upon the medieval fortress, which itself was constructed atop earlier Muslim, Visigothic, and Roman settlements. The fortress was strategically besieged by Alfonso I in 1133 before final conquest in 1149, subsequently passing through royal hands until Alfonso II ceded it to the Order of the Hospital in 1182. Today, the preserved Gothic church features a single nave with pointed arches and intact moldings, earning designation as Cultural Heritage of Interest under Aragonese law. This complex layering makes Fraga a fascinating archaeological testament to the region's contested medieval past.
