Viking ships found at Oseberg, Gokstad and Tune and several other unique items from the Viking age. The Oslo City Museum holds a permanent exhibition about the people in Oslo and the history of the city. The Kon-Tiki Museum houses Thor Heyerdahl's Kontiki and Ra2.
The National Museum holds and preserves, exhibits and promotes public knowledge about Norway's most extensive collection of art. The Museum shows permanent exhibitions of works from its own collections but also temporary exhibitions that incorporate work loaned from elsewhere. The National Museums exhibition avenues are the National Gallery, the Museum of Contemporary Art, the National Museum, the Museum of Decorative Arts and the National Museum of Architecture. A new National Museum in Oslo will be built in the next 10 years. The winner was Forum Artis, and the building will be located at Vestbanen behind the Nobel Peace Center. The Nobel Peace Center is an independent organisation opened on 11 June 2005 by the King Harald V as part of the celebrations to mark Norway's centenary as an independent country. The building houses a permanent exhibition, expanding every year when a new Nobel Peace Prize winner is announced, containing information of every winner in history. The building is mainly used as a communication centre.
Music and events
A large number of festivals are held in Oslo, such as Oslo Live, a rock and roll event, and the Oslo Jazz festival is a six-day festival which has been held annually in August for the past 25 years. Oslo's biggest Rock festival is �yafestivalen or simply "�ya". It draws about 60,000 people to the Medieval Park east in Oslo and last for four days.
The Oslo International Church Music Festival has been held annually since 2000. The Oslo World Music Festival showcases people who are stars in their own country but strangers in Norway. The Oslo Chamber Music Festival is held in August every year and world-class chambers and soloists
