From typicallyspanish.com

History
Spain On This Day - May 12
By m.p.
May 12, 2008 - 5:45 AM

1280: Alfonso X, in coalition with the Sultan Abu Yusuf, attacks Granada

1513: Foundation stone laid for the new cathedral in Salamanca

1912: The first colour photograph to be published in the Spanish press appears in the magazine, Blanco y Negro

1922: Spanish troops conquer Tazarut in the Moroccan War

1936: Las Cortes approve the election of Manuel Azaña as the President of the Spanish Republic

1995: Fernando Fernán-Gómez wins the Prince of Asturias Prize for the Arts