Casa de Juntas de Avellaneda Historical milestone · Sopuerta, Enkartazioak / Encartaciones, Bizkaia Image of Sopuerta, not of the place itself. Monumental complex in the Avellaneda neighborhood whose origin dates back to the 14th century, remodeled in the 20th century, which served as the seat of the Juntas Generales de las Encartaciones, the traditional governing body of the comarca. siglo XIV (origen); siglo XX (reforma) Photo: No machine-readable author provided. Príamo assumed (based on copyright claims). (Public domain) What to see and do in Sopuerta