It is located in the left margin of the river Nervion.

His name, according to the legend, means "Red stones" and assumes to the battle freed in the last third of the IXth Century in Padura, between Lope Fortún, the first Master of Biscay, against the prince Ordoño de León, although there are authors who it attribute to the color of vein of iron of the mount Ollargan.

Arrigorriaga consists of the following quarters: Porch of St Martin of Arrigorriaga-Aguirre-Martiartu - The Rock-Montefuerte.

Arrigorriaga presents a modern town planning in his central nucleus emphasized by the concentration of different historical realities and social. Along with the new apartments buildings very old proletarian housings coexist fruit of the industrialization overcome and the scarce traces of his rural past. This one, since it is logically, has a role emphasized in the most dispersed quarters as Martiartu or Aguirre.

Visits of Interest: Hamlet and chapels of San Pedro of Abrisqueta (XIth century, of the most ancient of Biscay), Jesus's Chapel Crucified, Saint's Chapel Christ de Landaederraga.
The baroque Palace, neoclassic palace both in the street Walked of Urgoiti (fte. to see the links)

Nuclei: Arrigorriaga, The Rock, Santa Elizabeth, Lambarketa, Ollargan, Bucket, Martiartu, Health And Hygiene, Aguirre, Brisketa