Just below the castle is the (cathedral), built in 1189 on the site of an earlier mosque, then rebuilt after the 1249 Reconquista and subsequently restored several times following earthquake damage. In many ways, this is the Algarve's most impressive cathedral, with a substantially unaltered Gothic interior. It's dramatically high and simple inside, with elegant vaulting, beautiful windows and several fine tombs. The Christ sculpture, the Senhor dos Passos, is one of the main processional figures of the town's Easter celebrations.