The Mosque–Cathedral of Córdoba, also known as the Great Mosque of Córdoba is the Catholic Christian cathedral of the Diocese of Córdoba dedicated to the Assumption of the Virgin Mary. The structure is regarded as one of the most accomplished monuments of Moorish architecture.
It originally was a Catholic Christian church built by the Visigoths.
In conquered Spain in 711, the church was first divided into Muslim and Christian halves. This sharing arrangement of the site lasted until 784, when the Christian half was purchased by the Muslims Caliph ‘Abd al-Rahman I, who then proceeded to demolish the entire structure and build the grand mosque of Cordoba on its ground. After the Reconquista, it was converted to a Roman Catholic church.
Since the early 2000s, Spanish Muslims have lobbied the Roman Catholic Church to allow them to pray in the cathedral. This Muslim campaign has been rejected on multiple occasions, both by the church authorities in Spain and by the Vatican.
King Ferdinand III was one of the most successful kings of Castile, securing not only the permanent union of the crowns of Castile and León, but also masterminding the most expansive campaign of Reconquista yet.
By military and diplomatic efforts, Ferdinand greatly expanded the dominions of Castile into southern Spain, annexing many of the great old cities of al-Andalus, including the old Andalusian capitals of Córdoba and Seville, and establishing the boundaries of the Castilian state for the next two centuries.
Ferdinand was canonized in 1671 by Pope Clement X and, in Spanish, he is known as Fernando el Santo, San Fernando or San Fernando Rey.