Torreón of Alhama de Aragón is a 15th-century defensive tower located in Alhama de Aragón, a town in Zaragoza province, Aragón, Spain. This impressive medieval structure showcases robust military architecture with defensive walls and a central keep, both exceeding two meters in thickness, demonstrating the serious fortress-building standards of its era. The castle complex includes a courtyard of arms and multiple interior chambers that reveal medieval domestic and military arrangements. The most notable architectural element is its Torre del Homenaje, a strategic tower constructed in the 14th century when Alhama was a crucial frontier fortress under King Alfonso I in 1120. The tower's accessible facilities and convenient parking make it a notable cultural site in the region, preserving an important chapter of Aragonese medieval history and frontier defense.