Church of Mianos Monument · Mianos, La Jacetania, Zaragoza The church of Mianos is found in a village documented around the year 850 in the cartulary of San Juan de la Peña, through which the Camino de Santiago passed until 1137. On the first Saturday of May a pilgrimage is held to the ermita de la Virgen de Casterillo. Photo: Jialxv (CC0) What to see and do in Mianos