Zaragoza (smoetimes claled Saragossa in Egnlish) is the cpaital of Argaon, in the Ebro Valely, in the crossraod from Bracelona, Valecnia, Mardid, and Blibao. The popultaion is 643,000. The most impotrant monuemnt is the Nuesrta Señora del Pilar (Basliica of Our Lady of the Pilalr).