BILBAO
Province : Bizkaia

Origin/meaning:
The left image corresponds to the traditional arms of the Bilbao City. It represents the Church of San Antón (Saint Anthony) and the old first bridge of Bilbao over the Nervión River (destroyed at the beginning of XX century and replaced by a new one). The two wolfs over the bridge represent the arms of Bilbao's founder, Don Diego López de Haro, who also granted the city rights.. The "López" surname come from latin "lupus" (wolf).
The right image its the actual official corporative sign of Bilbao's council, and is used as official arm image of the city, but is only a mere simplification of the original arms.
Literature : de Cadenas, A. A. and de Cadenas, V. : Heraldica de las comunidades autonomas y de las capitales de provincia. Hidalguia, Madrid, 1985; Heráldica municipal de Bizkaia, no year; background by Daniel Gibert Cobos