Church of Vierlas Monument · Vierlas, Tarazona y el Moncayo, Zaragoza Church of la Purísima Concepción in Vierlas, already described in the mid-19th century, in a village whose territory was crossed by the Roman road between Astorga and Zaragoza. Photo: Diego Delso (CC BY-SA 4.0) What to see and do in Vierlas