La Senyera - Catalonia flag. La Senyera is the name of the Catalan flag. It means "signal flag" in the Catalan language. The design is four stripes on a golden background from the coat of arms of the Crown of Aragon. You will see many Catalan flags flying on the 11 September which is the Catalanya national day called "
Diada Nacional de Catalunya" and also on
La Diada de Sant Jordi on 23 April (Saint George's day). Read about the history of
La Senyera on Wikipedia