Like many churches in Spain, the Iglesia Colegial del Salvador was once a Roman temple. It later became the Mosque of Ibn Abbas, the first and most important of Seville’s mosques, built in 830 CE.
- After the fall of Islamic Seville Muslims were allowed to continue using this mosque as such up until 1340 CE, when it was converted into a church. After falling into a dilapidated state, restoration work began in 1674 and was finished by 1712. Remnants of the mosque are still present, however: look for the columns, the ablutions courtyard and the original minaret, embedded in the Baroque tower.
Reference: HUMA’s Travel guide to Islamic Spain