Konserthuset has been the home of the Kungliga Filharmonikerna (Royal Stockholm Philharmonic Orchestra) since its inauguration in 1926. Architect Ivar Tengbom wanted to 'raise a musical temple not far from the Arctic Circle', and the bright bluestructure is one of the foremost examples of early 20th-century Swedish neo-classical design. With its 1,800 seats, the Main Hall is used for major concerts, while the beautiful chamber music hall, the Grünewald Hall (capacity 460), decorated by painter Isaac Grünewald, handles smaller events. The Kungliga Filharmonikerna, which celebrated its centenary in 2002, performs here regularly. Konserthuset's repertoire is based in the classical and romantic periods, but it also hosts the internationally renowned annual Composer Festival in the autumn, focusing on living composers.