Heritage Sites. Cuisine Drinks Kölsch is a local beer speciality brewed in Cologne. Alt is a local beer speciality brewed in Düsseldorf and the Lower Rhine Region. Dortmunder Export is a local pale lager beer speciality brewed in Dortmund. Festivals North Rhine-Westphalia hosts film festivals in Cologne, Bonn, Dortmund, Duisburg, Münster, Oberhausen and Lünen. Other large festivals include Rhenish carnivals, Ruhrtriennale. Every year Gamescom is hosted in Cologne. It is the largest video game convention in Europe. Music The composer Ludwig van Beethoven was born in Bonn in 1770. A regional anthem is the Lied für NRW (Song for NRW). North Rhine-Westphalia is home to many of Germany's best-known heavy metal, speed metal and thrash metal bands: Accept, Angel Dust, Blind Guardian, Doro (formerly of Warlock), Grave Digger, Holy Moses, Kreator, Rage, Scanner and Sodom. Also, North Rhine-Westphalia is home to Kraftwerk, originally a Krautrock band for four years, then later a synth-pop band. Economy North Rhine-Westphalia has always been Germany's powerhouse with the largest economy among the German states by GDP figures. In the 1950s and 1960s, Westphalia was known as Land von Kohle und Stahl (Land of Coal and Steel). In the post-World War II recovery, the Ruhr was one of the most important industrial regions in Europe, and contributed to the German Wirtschaftswunder. As of the late 1960s, repeated crises led to contractions of these industrial branches. On the other hand, producing sectors, particularly in mechanical engineering and metal and iron working industry, experienced substantial growth. Despite this structural change and an economic growth which was under national average, the 2018 GDP of 705 billion euro (1/4 of the total German GDP) made NRW the economically strongest state of Germany by GRP figures, as well as one of the most important economical areas in the world. Of Germany's top 100 corporations, 37 are based in North Rhine-Westphalia. On a per capita base, however, North Rhine-Westphalia remains one of the weaker among the Western German states. North Rhine-Westphalia attracts companies from both Germany and abroad. In 2009, the state had the most foreign direct investments (FDI) anywhere in Germany. Around 13,100 foreign companies from the most important investment countries control their German or European operations from bases in North Rhine-Westphalia. There have been many changes in the state's economy in recent times. Among the many changes in the economy, employment in the creative industries is up while the