<P> Due to the cold climate and proximity to major forests bordering the city, skiing is a popular recreational activity in Oslo . The Tryvann Ski Resort is the most used ski resort in Norway . The most successful ice hockey team in Norway, Vålerenga Ishockey, is based in Oslo . Manglerud Star is another Oslo - team who play in the top league . </P> <P> Bislett Stadium is the city's main track and field venue, and hosts the annual Bislett Games, part of IAAF Diamond League . Bjerke Travbane is the main venue for harness racing in the country . Oslo Spektrum is used for large ice hockey and handball matches . Nordstrand HE and Oppsal IF plays in the women's GRUNDIGligaen in handball, while Bækkelaget HE plays in the men's league . Jordal Amfi, the home of the ice hockey team Vålerenga Ishockey, and the national team . The 1999 IIHF World Championship in ice hockey were held in Oslo, as have three Bandy World Championships, in 1961, 1977 and 1985 . The UCI Road World Championships in bicycle road racing were hosted 1993 . </P> <P> Oslo was bidding to host the 2022 Winter Olympics, but later withdrew on 2 October 2014 . </P> <P> Oslo Police District is Norway's largest police district with over 2,300 employees . Over 1,700 of those are police officers, nearly 140 police lawyers and 500 civilian employees . Oslo Police District has five police stations located around the city at Grønland, Sentrum, Stovner, Majorstuen and Manglerud . The National Criminal Investigation Service is located in Oslo, which is a Norwegian special police division under the NMJP . PST is also located in the Oslo District . PST is a security agency which was established in 1936 and is one of the non-secret agencies in Norway . </P>

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