frontier
Castle of Calatrava la Vieja
Calatrava la Vieja guarded the Guadiana crossing as an Islamic fortress before becoming the first headquarters of the Christian Order of Calatrava—the frontier's strategic anchor across the Al-Andalus and Castilian eras. Its Arabic name (qal'at rabah) is one of the region's most significant Islamic toponymic survivals. Anchor modes: material_layer; network_route | Search hooks: Castle of Calatrava la Vieja; qal'at rabah; fortaleza Guadiana; Orden de Calatrava primera sede; Parque Arqueológico Calatrava; Carrión de Calatrava
Visit the archaeological site on the Guadiana River in Carrión de Calatrava, Ciudad Real—excavated fortress walls and interpretation panels explain its role as Islamic frontier defense and later Christian military order headquarters.