Puente Nuevo de Ondarroa Monument · Ondarroa, Lea-Artibai / Markina-Ondarroa, Bizkaia Image of Ondarroa, not of the place itself. Bridge designed by José León de Izaguirre in 1857, which historically served as a crossing point between Guipúzcoa and Biscay over the Artibai estuary. 1857 Photo: Ibai1984 (CC BY-SA 4.0) What to see and do in Ondarroa