After Cordoba was conquered by Ferdinand III of Castile in 1236, the mosque (Mezquita) was immediately consecrated as a Roman Catholic church. Alterations were gradually added. The around 40 chapels didn’t affect the layout of the former mosque much but the addition of the Renaissance-Baroque cathedral in the heart of the former prayer hall did noticeable damaged (but probably contributed to the ultimate survival of 70% of the original mosque).
The transept and choir of the Mezquita Mosque-Cathedral in Cordoba was mostly constructed between 1533 and 1766 in a Renaissance and Baroque style. The quality of the work is excellent. Highlights include the choir stalls (mid-18th century) and the Baroque organs that are still in used in updated form.