Castillo de Aixita Historical milestone · Irurtzun, Sakana, Navarra On Mount Hermana Mayor, above Irurtzun, once stood the medieval castle of Aixita, destroyed in 1415. The old parish church of San Martín de Tours, patron saint of the town, is preserved, converted into a cultural center. destruido en 1415 Photo: Uranzu (CC BY-SA 4.0) What to see and do in Irurtzun