Linz is the third-largest city of Austria and capital of the state of Upper Austria. Since December 1, 2014 Linz is a member of the UNESCO Creative Cities (UCCN) network as a City of Media Arts. Cities receive this title for enriching the urban lifestyle through the sponsorship and successful integration of media art and involving society in these electronic art forms. Linz is well known for the Linzer torte, which is said to be the oldest cake in the world, with its first recipe dating from 1653.