The Mosque

The Mosque of Córdoba is a Roman Catholic cathedral and former mosque situated in Andalusia, in the city of Córdoba. At first it was built as a church, after the Muslim conquest it was confiscated to use as a mosque and became the second largest mosque in the world. After the Spanish Reconquista, it was returned to its original use as a church.
The Great Mosque of Córdoba was considered a wonder of the medieval world by both Muslims and Christians.