Iglesia de San Millán Abad de Petilla de Aragón Monument · Petilla de Aragón, Sangüesa, Navarra A 13th-century Gothic church with a single nave of two bays and a polygonal apse, and a Romanesque doorway with five archivolts decorated with Jaca chessboard motifs. It preserves a 14th-century Gothic crucifix and a 16th-century raised choir with nine flamboyant tracery panels; the three-tiered square tower was completed in November 1565. s. XIII; 1565 Photo: Jialxv (CC BY-SA 4.0) What to see and do in Petilla de Aragón