Molinos harineros históricos de Gatika Curiosity · Gatika, Plentzia-Mungia, Bizkaia Image of Gatika, not of the place itself. In the 19th century Gatika had as many as six flour mills making use of the flow of the Plencia river, a reflection of its former agricultural economy. Photo: MiguelAlanCS (CC BY-SA 4.0) What to see and do in Gatika