Lillehammer (Norwegian pronunciation: [ˈlɪləˈhɑmər] ) is a town and municipality in Oppland county, Norway. It is part of the traditional region of Gudbrandsdal. The administrative centre of the municipality is the town of Lillehammer. As of May 2011, the population of the town of Lillehammer was 26,639. The city centre is a late 19th century concentration of wooden houses, which enjoys a picturesque location overlooking the northern part of lake Mjøsa and the river Lågen, surrounded by mountains. Lillehammer hosted the 1994 Winter Olympics and will host the 2016 Winter Youth Olympics.