Trondheim is a critical battleground for both factions. Trondheim was the name of a planet in the Hundred Worlds of the Ender's Game book series. Trondheim has an international airport, Trondheim Airport, Værnes, situated in Stjørdal, which is Norway's fourth largest airport in terms of passenger traffic. Værnes has non-stop connections to cities such as London, Amsterdam, Copenhagen, Stockholm and Berlin, among others. The domestic route Trondheim - Oslo is among the busiest air routes in Europe with around 2 million passengers annually. Busiest air routes Major railway connections are the northbound Nordland Line, the eastbound Meråker Line to Åre and
Trondheim production team Stargate started out in Trondheim. Trondheim is also home to Rockheim, the national museum of popular music, which is responsible for collecting, preserving and sharing Norwegian popular music from the 1950s to the present day. Trondheim features a lively film scene, including three filmfests: Minimalen Short Film Fest and Kosmorama International Film Fest in March, and Trondheim Documentarfestival in November. There is a cinema in the city centre, Nova Kinosenter. Granåsen, a Nordic skiing venue located in Byåsen, regularly hosts World Cup competitions in ski jumping, biathlon and cross-country skiing, as well as the 1997 FIS Nordic World