page_title: Oslo
section_title: Geography
hierarchical_section_title: Oslo / Geography
caption_attribution_description: English: Date: 2018-07-27 Sensor: MSI on Sentinel-2A Resolution: 10m RGB Composites: True color, Band 4-3-2
context_page_description: Oslo is the capital, most populous, and primate city of Norway. It constitutes both a county and a municipality. As of 27 February 2020, the municipality of Oslo had a population of 693,491, while the population of the city's urban area of 4 November 2019 was 1,019,513. The metropolitan area had an estimated population of 1.71 million.
  During the Viking Age the area was part of Viken. Oslo was founded as a city at the end of the Viking Age in the year 1040 under the name Ánslo, and established as a kaupstad or trading place in 1048 by Harald Hardrada. The city was elevated to a bishopric in 1070 and a capital under Haakon V of Norway around 1300. Personal unions with Denmark from 1397 to 1523 and again from 1536 to 1814 reduced its influence. After being destroyed by a fire in 1624, during the reign of King Christian IV, a new city was built closer to Akershus Fortress and named Christiania in the king's honour. It was established as a municipality on 1 January 1838. The city functioned as the capital of Norway during the 1814–1905 union between Sweden and Norway.
context_section_description: Oslo occupies an arc of land at the northernmost end of the Oslofjord. The fjord, which is nearly bisected by the Nesodden peninsula opposite Oslo, lies to the south; in all other directions Oslo is surrounded by green hills and mountains. There are 40 islands within the city limits, the largest being Malmøya (0.56 km² or 0.22 sq mi), and scores more around the Oslofjord. Oslo has 343 lakes, the largest being Maridalsvannet (3.91 km² or 1.51 sq mi). This is also a main source of drinking water for large parts of Oslo.
  Although Eastern Norway has a number of rivers, none of these flow into the ocean at Oslo. Instead Oslo has two smaller rivers: Akerselva (draining Maridalsvannet, which flows into the fjord in Bjørvika), and Alna. The waterfalls in Akerselva gave power to some of the first modern industry of Norway in the 1840s. Later in the century, the river became the symbol of the stable and consistent economic and social divide of the city into an East End and a West End; the labourers' neighbourhoods lie on both sides of the river, and the divide in reality follows Uelands street a bit further west. River Alna flows through Groruddalen, Oslo's major suburb and industrial area. The highest point is Kirkeberget, at 629 metres (2,064 ft). Although the city's population is small compared to most European capitals, it occupies an unusually large land area, of which two-thirds are protected areas of forests, hills and lakes. Its boundaries encompass many parks and open areas, giving it an airy and green appearance.
caption: Satellite image of Oslo, July 2018.
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