2 towns across 2 provinces.
A walled hilltop town in Álava's Basque Country, its medieval streets and fortified walls rising above one of Spain's oldest pre-Roman Celtic settlements.
A fortified medieval town on the Bidasoa river in Gipuzkoa, its intact walls, Gothic-baroque church, and Carlos V castle standing where Castile and France have faced each other across the water for eight centuries.
