La fundación medieval de Errigoiti Historical milestone · Errigoiti, Gernika-Bermeo, Bizkaia Image of Errigoiti, not of the place itself. Errigoiti was founded in 1376 by Juan de Gaztela to protect the route between Mungia and Gernika, with a medieval town layout based on the charter of Logroño, around the church of Idoibaltzaga. 1376 Photo: PLATAFORMA ERRIGOITI… (CC BY-SA 3.0) What to see and do in Errigoiti