Santiago Arriaga y Arrien Curiosity · Arrieta, Plentzia-Mungia, Bizkaia Image of Arrieta, not of the place itself. Trinitarian priest (1903-1936), a native of Arrieta, murdered during the Spanish Civil War and beatified in 2007. beatificado en 2007 Photo: Indalecio Ojanguren (CC BY-SA 3.0) What to see and do in Arrieta