Casa Torre de Aranzibia Monument · Berriatua, Lea-Artibai / Markina-Ondarroa, Bizkaia Tower house from the late 15th or early 16th century, one of the best-preserved defensive buildings in Berriatua. finales del siglo XV / principios del siglo XVI Photo: Lander Eizagirre (CC BY-SA 3.0) What to see and do in Berriatua