 However, industrial development paved the way for urban expansion in the Egia and Amara Berri districts, on the marshes and riverbed of the Urumea, at the end of the 1940s and beginning of the 1950s.In 1943, the first Basque language schools were established by Elvira Zipitria, who taught in Basque from her home in the Old Town.In 1947, the Grand Casino was converted into the City Hall.