Iglesia de Santa Eufemia Monument · Bermeo, Gernika-Bermeo, Bizkaia 13th-century oath-taking church (iglesia juradera) where, according to foral tradition, the Lords of Vizcaya swore to uphold the fueros (charters). It is one of the oldest historic churches in the town. siglo XIII Photo: Telle (CC BY-SA 3.0) What to see and do in Bermeo