The History Archive of Euskadi has been built on the site presently occupied by the Vesga Building, at 3 Maria Diaz de Haro Street in Bilbao. Measuring 20 m. in width between dividing walls, and with the site being located on quite a long street, the decision was taken to augment the perception of the building by means of a bent glass wavy façade to accentuate its position and break up the face flatness of the rest of the street.