Due to severe damages caused by artillery fire during the War of the Pacific, the Church San Agustin (built in 1574) was close to collapse at the end of the 19th century. After the war the church was rebuilt resembling its architecture and style at the beginning of the 18th century.
Worth seeing are the arcades, the choir stalls with remarkable wooden carvings, the beautiful ceiling and the impressive wooden sculpture La Muerte (The Death).