Oslo (Norwegian: [ˈʊ̂ʂlʊ] or [ˈʊ̂slʊ, ˈʊ̀ʂlʊ]; Southern Sami: Oslove) is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of 709,037 in 2022, while the city's greater urban area had a population of 1,064,235 in 2022, and the metropolitan area had an estimated population of 1,546,706 in 2021. During the Viking Age, the area was part of Viken. Oslo was founded as a city at the end of the Viking Age in 1040 under the name Ánslo, and established as a kaupstad or trading place in 1048 by Harald Hardrada.
https://en.wikipedia.org/wiki/Oslo