A small metropolis located between mounts and cut on its half by Ibaizabal river, which whilst progressively  flowing, turns into Nervión Estuary. A dynamic city dedicated to trade and industry through centuries as well as being both the economical enginehouse of Basque Country and in many a respect of the north of the Spanish state.

Pequeña metrópoli entre montes sajada en su mitad por el rio Ibaizabal, que se va convirtiendo a su paso en la ria del Nervión. Villa dinámica, dedicada al comercio y la industria en diversas épocas, y motor económico del Pais Vasco y en no poca medida del norte del estado español.