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 oldest theatre still in use in Scandinavia. The city also features an alternative theatre house Teaterhuset Avant Garden, and the theatre company Teater Fusentast. Trondheim has a broad music scene, and is known for its strong communities committed to rock, jazz and classical music. The city's interest in Jazz and classical music are spearheaded by the music conservatory at NTNU which has been called one of the most innovative in the world, and the municipal music school, "Trondheim Kommunale Musikk- og Kulturskole". The Trondheim Symphony Orchestra and the Trondheim Soloists are well-known. The city also hosts a yearly Jazz festival,