Iglesia de San Pedro de Aibar Monument · Aibar/Oibar, Sangüesa, Navarra A 12th-century Romanesque church with three naves of three bays, to which a broad transept, the main chapel, and the sacristy were added in the 16th century. It preserves Renaissance doorways with devotional inscriptions. s. XII Photo: Iñaki LL (CC BY-SA 3.0) What to see and do in Aibar/Oibar