Romanesque churches in Madrid
The first parishes of the Christian Madrid were the ten mentioned in the letter of granting of the Fuero of Madrid; some of them would be rebuilt of mosques prior to the conquest of Alfonso VI of León and Castile, and others built during the Castitian rule of the city established since 1085. All of these were located outside the Christian walls, of poor material resources in its early stages.
Source: Wikipedia — Romanesque churches in Madrid (CC BY-SA 4.0)