Iglesia de San Martín de Castillonuevo Monument · Castillonuevo/Gazteluberri, Sangüesa, Navarra The parish church in the upper part of the village, which preserves medieval walls despite 16th-century and Baroque alterations. Its 18th-century Rococo altarpiece includes scenes of San Martín sharing his cloak, Pentecost, and the Crucifixion, along with a Gothic carving of the Virgen de las Victorias from an old hermitage. s. XVIII Photo: Jialxv (CC0) What to see and do in Castillonuevo/Gazteluberri