Catalan flag flies over the Montjuic Castle old military fortress on Montjuic Mountain overlooking the city, Barcelona, Catalonia, Spain, Europe

catalan flag flies over montjuic castle old military fortress montjuic mountain overlooking city barcelona catalonia spain europe catalan flag barcelona cityscape spain catalonia flag city building sky sun sunny day view panorama architecture europe travel tourism landmark history culture identity pride waving breeze yellow red striped modern traditional urban hillside mountain hills green trees park summer day outdoor