Medieval paintings were discovered under layers of whitewash in 1951 and subsequently restored. They consist of two separate sets of murals. On the chancel arch there are Romanesque paintings from the construction period of the church, of high artisanal quality. They have been somewhat damaged by the construction of new vaults during the 15th century as well as by being covered by whitewash. Of later date is the set of murals which decorate the four vaults of the nave; they were probably made in the first quarter of the 16th century and are in a Late Gothic style. The southernmost vault contains a depiction of Hell; the western vault the Triumphal entry into Jerusalem of Christ; the northern vault Saint Peter at the gates of Heaven and the easternmost vault contains a depiction of Christ in Majesty with Mary and John the Baptist by his side.