S Juan de los Caballeros (now Museo Zuloaga) has a nave with an external cloister on the west and south sides, and a large square tower to the south-east. The cloister has fine capitals and a corbel-table, but has been filled in; the interior of the church has been entirely rebuilt. This is one of the earliest of the Romanesque churches that were built in the town. The church now houses an exhibition of the works of the ceramic artist Daniel Zuloaga.