Church of Hoz y Costeán Monument · Hoz y Costeán, Somontano de Barbastro, Huesca The municipality of Hoz y Costeán, the result of the union of several settlements, preserves three parish churches: that of Santa María Magdalena, that of San Millán and that of Santiago Apóstol. Photo: Vicenç Salvador Torres Guerola (CC BY-SA 3.0) What to see and do in Hoz y Costeán