The city of Oslo was established as a municipality on 3 January 1838 (see formannskapsdistrikt). It was separated from the county of Akershus to become a county of its own in 1842. The rural municipality of Aker was merged with Oslo on 1 January 1948 (and simultaneously transferred from Akershus county to Oslo county). Furthermore, Oslo shares several important functions with Akershus county. The neighbouring industrial commune of Aker was incorporated into Oslo in 1948.
The origin of the name Oslo has been the subject of much debate. While certainly derived from Old Norse, it was in all probability originally the name of a large farm at the site of the first settlements in Bjørvika.
Most modern linguists lean toward an interpretation of "Oslo/Åslo" as either "the meadow at the foot of the hill", with the name serving a topographical description, or the possibility of the name referring to an ancient site of worship in "the meadow consecrated to the gods". Both interpretations are considered equally likely.
Erroneously, it was once assumed that Oslo meant "the mouth of the Lo river", referring to another name of the river Alna. This apocryphal story is not only ungrammatical (the correct form would be Loaros, cf. Nidaros), but the name Lo is not recorded anywhere before Peder Claussøn Friis first used it in the same work in which he proposed this etymology. The name Lo is now believed to be a back-formation arrived at by Friis in support of his spurious etymology for Oslo.
Oslo is one of very few cities in Norway, besides Bergen and Tønsberg, that does not have a formal coat-of-arms, but which uses a city seal instead. The seal of Oslo shows the city's patron saint, St. Hallvard, with his attributes, the millstone and arrows, with a naked woman at his feet. He is seated on a throne with lion decorations, which at the time was also commonly used by the Norwegian Kings.
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 the first modern industry of Norway in the 1840, and 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.
Oslo (with neighbouring Sandvika-Asker) is built in a horseshoe shape on the shores of the Oslofjord and limited in most directions by hills and forests. As a result, any point within the city is relatively close to the forest. There are two major forests bordering the city: Østmarka (literally "Eastern Forest", on the eastern perimeter of the city), and the very large Nordmarka (literally "Northern Forest", stretching from the northern perimeter of the city deep into the hinterland).true
The municipality operates eight public swimming pools. Tøyenbadet is the largest indoor swimming facility in Oslo and one of the few pools in Norway offering a 50-metre main pool. The outdoor pool Frognerbadet also has the 50-metre range.
Oslo's cityscape is being redeveloped as a modern city with various access-points, an extensive metro-system with a new financial district and a cultural city. In 2008, an exhibition was held in London presenting the award-winning Oslo Opera House, the urban regeneration scheme of Oslo's seafront, Munch/Stenersen and the new Deichman Library. Most of the buildings in the city and in neighbouring communities are low in height with only the Plaza, Postgirobygget and the highrises at Bjørvika considerably taller.
Oslo is the capital of Norway, and as such is the seat of Norway's national government. Most government offices, including that of the Prime Minister, are gathered at Regjeringskvartalet, a cluster of buildings close to the national Parliament—the Storting.
Constituting both a municipality and a county of Norway, the city of Oslo is represented in the Storting by seventeen Members of Parliament. Six MPs are from the Labour Party; the Conservative Party and the Progress Party have three each; the Socialist Left Party and the Liberals have two each; and one is from the Christian Democrats.
The combined municipality and county of Oslo has had a parliamentary system of government since 1986. The supreme authority of the city is the City Council (Bystyret), which currently has 59 seats. Representatives are popularly elected every four years. The City Council has five standing committees, each having its own areas of responsibility.The largest parties in the City Council are the Labour Party and the Conservatives, with 18 and 16 representatives respectively.
The Mayor of Oslo is the head of the City Council and the highest ranking representative of the city. This used to be the most powerful political position in Oslo, but following the implementation of parliamentarism, the Mayor has had more of a ceremonial role, similar to that of the President of the Storting at the national level. The current Mayor of Oslo is Fabian Stang.
Since the local elections of 2003, the city government has been a coalition of the Conservative Party and the Progress Party. Based mostly on support from the Christian Democrats and the Liberals, the coalition maintains a workable majority in the City Council. After the 2007 local elections on 10 September, the conservative coalition remained in majority.
The Governing Mayor of Oslo is the head of the City government. The post was created with the implementation of parliamentarism in Oslo and is similar to the role of the prime minister at the national level. The current governing mayor is Stian Berger Røsland.
Oslo is an important centre of maritime knowledge in Europe and is home to approximately 1980 companies and 8,500 employees within the maritime sector, some of which are the world's largest shipping companies, shipbrokers, and insurance brokers. Det Norske Veritas, headquartered at Høvik outside Oslo, is one of the three major maritime classification societies in the world, with 16.5% of the world fleet to class in its register. The city's port is the largest general cargo port in the country and its leading passenger gateway. Close to 6,000 ships dock at the Port of Oslo annually with a total of 6 million tonnes of cargo and over five million passengers. The gross domestic product of Oslo totalled NOK268.047 billion (€33.876 billion) in 2003, which amounted to 17% of the national GDP. This compares with NOK165.915 billion (€20.968 billion) in 1995. The metropolitan area, bar Moss and Drammen, contributed 25% of the national GDP in 2003 and was also responsible for more than one quarter of tax revenues. In comparison, total tax revenues from the oil and gas industry on the Norwegian Continental Shelf amounted to about 16%.
Oslo is one of the most expensive cities in the world. As of 2006, it is ranked tenth according to the Worldwide Cost of Living Survey provided by Mercer Human Resource Consulting and first according to the Economist Intelligence Unit. The reason for this discrepancy is that the EIU omits certain factors from its final index calculation, most notably housing. Although Oslo does have the most expensive housing market in Norway, it is comparably cheaper than other cities on the list in that regard. Meanwhile, prices on goods and services remain some of the highest of any city. Oslo hosts 2654 of the largest companies in Norway. Within the ranking of Europe's largest cities ordered by their number of companies Oslo is in fifth position. A whole group of oil and gas companies is situated in Oslo. According to a report compiled by Swiss bank UBS in the month of August 2006, Oslo and London were the world's most expensive cities.
Oslo houses several major Museums and galleries. The Munch Museum contains the Scream and other work by Edvard Munch who donated all his work to the city after his death. The City-Council is currently planning a new Munch Museum which is most likely to be built in Bjørvika, in the southeast of the city. The museum will be named Munch/Stenersen. 50 different museums are located around the city. Folkemuseet is located on the Bygdøy peninsula and is dedicated to Folk art, Folk Dress, Sami culture and the viking culture. The outdoor museum contains 155 authentic old buildings from all parts of Norway, including a Stave Church. The Vigeland Museum located in the large Vigeland Park by many people known as the Frognerpark is free to access and contains over 212 sculptures by Gustav Vigeland including an obelisk and the Wheel of Life. Another popular sculpture is Sinnataggen, a baby boy stamping his foot in fury. This statue is very well known as an icon in the city. Vikingskiphuset contains three vikingships found at Oseberg, Gokstad and Tune and several other unique items from the Viking age. The Oslo City Museum holds a permanent exhibition about the people in Oslo and the history of the city. The Kon-Tiki Museum houses Thor Heyerdahls Kontiki and Ra2.
The National Museum holds and preserves, exhibits and promotes public knowledge about Norway's most extensive collection of art. The Museum shows permanent exhibitions of works from its own collections but also temporary exhibitions that incorporate work loaned from elsewhere. The National Museums exhibition avenues are the National Gallery, the Museum of Contemporary Art, the National Museum, the Museum of Decorative Arts and the National Museum of Architecture. A new National Museum in Oslo will be built in the next 10 years. The winner was Forum Artis, and the building will be located at Vestbanen behind the Nobel Peace Center. The Nobel Peace Center is an independent organisation opened on 11 June 2005 by the King Harald V as part of the celebrations to mark Norway's centenary as an independent country. The building houses a permanent exhibition, expanding every year when a new Nobel Peace Prize winner is announced, containing information of every winner in history. The building is mainly used as a communication centre.
The Oslo World Music Festival showcases people who are stars in their own country but strangers in Norway. The Oslo Chamber Music Festival is held in August every year and world-class chambers and soloists gather in Oslo to perform at this festival. The Norwegian Wood Rock Festival is held every year in June in Oslo.
The Nobel Peace Prize Ceremony is headed by the Institute; the award ceremony is held annually in The City Hall on 10 December. Even though Sami land is far away from the capital, the Norwegian Museum of Cultural History marks the Sami National Day with a series of activities and entertainment.
The World Cup Biathlon in Holmenkollen is held every year and here male and female competitors compete against each others in Sprint, Pursuit and Mass Start disciplines.
Other examples of annual events in Oslo are Desucon, a convention focusing on Japanese culture and Færderseilasen, the world's largest overnight regatta with more than 1100 boats taking part every year.
Norway's principal orchestra is the Oslo Philharmonic, based at the Oslo Concert Hall since 1977. Although it was founded in 1919, the Oslo Philharmonic can trace its roots to the founding of the Christiania Musikerforening (Christiania Musicians Society) by Edvard Grieg and Johan Svendsen in 1879.
Oslo houses over 20 theatres, such as the Norwegian Theatre and the National Theatre located at Karl Johan Street. The National Theatre is the largest theatre in Norway and is situated between the castle and the Storting. The names of Ludvig Holberg, Henrik Ibsen and Bjørnstjerne Bjørnson are engraved on the façade of the building over the main entrance. This theatre represents the actors and play-writers of the country but the songwriters, singers and dancers are represented in the form of a newly opened Oslo Opera House, situated in Bjørvika. The Opera was opened in 2008 and is a national landmark, designed by the Norwegian architectural firm, Snøhetta. There are two houses, together containing over 2000 seats. The building cost 500 million euro to build and took five years to build and is known for being the first Opera House in the world to let people walk on the roof of the building. The foyer and the roof are also used for concerts as well as the three stages.
Oslo Police District is Norway's largest police district with over 2300 employees. Over 1700 of those are policemen, nearly 140 police lawyers and 500 civil employees. Oslo Police District has five police stations located around the city. Kripos 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. At least two known underground NATO facilities are located in The Oslo District, one underground in Kolsås near NSM which is one of Norway's major national security authorities.
On 22 July 2011, Oslo was the site of one of two terrorist attacks: a bombing of Oslo government offices, and a shooting at a youth camp in Utøya.
Oslo has Norway's most extensive public transport system, managed by Ruter. This includes the six-line Oslo Metro, the world's most extensive metro per resident, the six-line Oslo Tramway and the eight-line Oslo Commuter Rail. The tramway operates within the areas close to the city centre, while the metro, which runs underground through the city centre, operates to suburbs further away; this includes two lines which operate to Bærum, and the Ring Line which loops to areas north of the centre.
Oslo Central Station acts as the central hub, and offers train services to most major cities in southern Norway as well as Stockholm and Gothenburg in Sweden. The Airport Express Train operates along the high-speed Gardermoen Line. The Drammen Line runs under the city centre in the Oslo Tunnel. Some of the city islands and the neighbouring municipality of Nesodden are connected by ferry. Daily cruiseferry services operate to Copenhagen and Frederikshavn in Denmark, and to Kiel in Germany.
Many of the motorways pass through the downtown and other parts of the city in tunnels. The construction of the roads is partially supported through a toll ring. The major motorways through Oslo are European Route E6 and E18. There are three beltways, the innermost which are streets and the outermost, Ring 3 which is an expressway.
The main airport serving Oslo is Oslo Airport, Gardermoen, located in Ullensaker, 47 kilometres (29 mi) from the city centre of Oslo. It acts as the main international gateway to Norway, and is the sixth-largest domestic airport in Europe. Gardermoen is a hub for Scandinavian Airlines, Norwegian Air Shuttle and Widerøe. Oslo is also served by two secondary airports, which serve some low-cost carriers, such as Ryanair: Moss Airport, Rygge and Sandefjord Airport, Torp, the latter being 110 kilometres (68 mi) from the city.