German artists also make up a large percentage of Industrial music acts, which is called Neue Deutsche Härte. Germany hosts some of the largest Goth scenes and festivals in the entire world, with events like Wave-Gotik-Treffen and M'era Luna Festival attracting up to 30,000 people. In addition, the country hosts Wacken Open Air, the biggest heavy metal open air festival in the world. Since about 1970, Germany has once again had a thriving popular culture, now increasingly led by its reinstated capital Berlin, and a self-confident music and art scene. Germany is also very well known for its many renowned opera houses, such as Semperoper, Komische Oper Berlin and Munich State Theatre. Richard Wagner established the Bayreuth Festspielhaus. One of the most famous composers of the international film business is Hans Zimmer. The year 2020 was designated “Beethoven Year” to mark 250 years since the composer was born. Cinema German cinema dates back to the very early years of the medium with the work of Max Skladanowsky. It was particularly influential during the years of the Weimar Republic with German expressionists such as Robert Wiene and Friedrich Wilhelm Murnau. Austrian-based director Fritz Lang, who became a German citizen in 1926 and whose career flourished in the pre-war German film industry, is said to have been a major influence on Hollywood cinema. His silent movie Metropolis (1927) is referred to as the birth of modern Science Fiction movies. Founded in 1912, the Babelsberg Film Studio is the oldest large-scale film studio in the world. In 1930, Josef von Sternberg directed The Blue Angel, which was the first major German sound film and it brought world fame to actress Marlene Dietrich. Impressionist documentary Berlin: Symphony of a Great City, directed by Walter Ruttmann, is a prominent example of the city symphony genre. The Nazi era produced mostly propaganda films although the work of Leni Riefenstahl still introduced new aesthetics to film. During the 1970s and 1980s, New German Cinema directors such as Volker Schlöndorff, Werner Herzog, Wim Wenders, and Rainer Werner Fassbinder put West German cinema back on the international stage with their often provocative films. More recently, films such as Good Bye Lenin! (2003), Gegen die Wand (Head-on) (2004), Der Untergang (Downfall) (2004), and Der Baader Meinhof Komplex (2008) have enjoyed international success. The Academy Award for Best Foreign Language Film went to the German production Die Blechtrommel (The Tin Drum)