Institut für Sozialforschung at Johann Wolfgang Goethe-Universität Frankfurt-am-Main Leibniz-Institut für Bildungsforschung und Bildungsinformation, Frankfurt-am-Main Forschungsinstitut für Deutsche Sprache – Deutscher Sprachatlas – at Philipps-Universität Marburg Paul-Ehrlich-Institut, * Forschungsinstitut und Naturmuseum Senckenberg, Frankfurt am Main Peace Research Institute Frankfurt, Frankfurt-am-Main Institut für sozial-ökologische Forschung, Frankfurt-am-Main Athene (research center), Darmstadt Culture Hesse has a rich and varied cultural history, with many important cultural and historical centres and several UNESCO world-heritage sites. Architecture, art, literature and music Darmstadt has a rich cultural heritage as the former seat of the Landgraves and Grand Dukes of Hesse. It is known as centre of the art nouveau Jugendstil and modern architecture and there are also several important examples of 19th century architecture influenced by British and Russian imperial architecture due to close family ties of the Grand Duke's family to the reigning dynasties in London and Saint Petersburg in the Grand Duchy period. Darmstadt is an important centre for music, home of the Darmstädter Ferienkurse for contemporary music and the Jazz Institute Darmstadt, Europe's largest public jazz archive. Frankfurt am Main is a major international cultural centre. Over 2 million people visit the city's approximately 60 exhibition centres every year. Amongst its most famous art galleries are the Schirn Kunsthalle, a major centre for international modern art, and the Städel, whose large collections include over 3000 paintings, 4000 photographs, and 100,000 drawings including works by Picasso, Monet, Rembrandt and Dürer. Goethe was born in Frankfurt and there is a museum in his birthplace. Frankfurt has many music venues, including an award-winning opera house, the Alte Oper, and the Jahrhunderthalle. Its several theatres include the English Theatre, the largest English-speaking theatre on the European continent. Kassel has many palaces and parks, including Bergpark Wilhelmshöhe, a Baroque landscape park and UNESCO World Heritage site. The Brothers Grimm lived and worked in Kassel for 30 years and the recently opened Grimmwelt museum explores their lives, works and influence and features their personal copies of the Children's and Household Tales, which are on the UNESCO World Heritage "Memory of the World" Document register. The Fridericianum, built in 1779, is one of the oldest public museums in Europe. Kassel is also home to the documenta, a large modern art exhibition that has taken place every five years since the 1950s. The Hessian Ministry of the Arts supports numerous independent cultural initiatives, organisations, and associations as well as artists from many fields