Holmenkollbakken is a large ski jumping hill located at Holmenkollen in Oslo, Norway. It has a hill size of HS134, a construction point of K-120, and a capacity for 30,000 spectators. Holmenkollen has hosted the Holmenkollen Ski Festival since 1892 and 1983 the FIS Nordic Combined World Cup. It has also hosted the 1952 Winter Olympics and the FIS Nordic World Ski Championships in 1930, 1966, 1982 and 2011.
The hill has been rebuilt 19 times; important upgrades include a stone take-off in 1910, an in-run superstructure in 1914, and a new superstructure in 1928. During the Second World War, the venue was used as a military installation, but upgraded in the late 1940s. Further expansions were made ahead of the 1966 and 1982 World Championships, as well as in 1991. Between 2008 and 2010, the entire structure was demolished and rebuilt.
In 2002, the Association for the Promotion of Skiing and the city started the process of applying for the FIS Nordic World Ski Championships 2009. On 22 September 2005, FIS stated that an all-new Holmenkollbakken would have to be built if Oslo was to host the World Championships and World Cup tournaments. In December 2005, the Norwegian Directorate for Cultural Heritage gave permission for the tower to be demolished, on the condition it was replaced by a new in-run with a similar architectural quality and retain its function as a landmark. They stated that it was the activity itself that is worthy of preservation, not the structure itself. The city council made the final decision to apply for the World Championships and build a new hill on 1 March 2006.
The municipality issued a architectural design competition to rebuild the hill. Julien De Smedt's proposal was selected among 104 entrants. Demolition of Holmenkollbakken started on 16 October 2008. The costs of the new large hill were NOK 715 million, while total costs for the upgrade of the national arena and infrastructure ended at NOK 2,426 million. This included the construction of a new ski stadium next to Holmenkollbakken, and Midtstubakken, and upgrades to the Holmenkollen Line.
As of 8 February 2011, the hill record is unofficially held by Anders Jacobsen at 142.5 meters. The official hill record was set at 5 of March 2011 by Andreas Kofler at 141 meters.