In 1948, Oslo merged with Aker, a municipality which surrounded the capital and which was 27 times larger, thus creating the modern, vastly enlarged Oslo municipality.
At the time, Aker was a mostly affluent, green suburban community, and the merger was unpopular in Aker.

The municipality developed new areas such as Ullevål garden city (1918–1926) and Torshov (1917–1925).
City Hall was constructed in the former slum area of Vika from 1931 to 1950.
The municipality of Aker was incorporated into Oslo in 1948, and suburbs were developed, such as Lambertseter (from 1951).
Aker Brygge was constructed on the site of the former shipyard Akers Mekaniske Verksted, from 1982 to 1998.

The city and municipality used the name Kristiania until 1 January 1925 when the name changed to Oslo.
Oslo was the name of an eastern suburb - it had been the site of the city centre, until the devastating 1624 fire.
King Christian IV of Denmark ordered a new city built with his own name; Oslo remained a poor suburb outside the city border.
In the early-20th century, Norwegians argued that a name memorialising a Danish king was inappropriate as the name of the capital of Norway, which became fully independent in 1905.

In the 2011 Norway terror attacks, Oslo was hit by a bomb blast that ripped through the Government quarter, damaging several buildings including the building that houses the Office of the Prime Minister.
Eight people died in the bomb attack.
In 1948, Oslo merged with Aker, a municipality which surrounded the capital and which was 27 times larger, thus creating the modern, vastly enlarged Oslo municipality. At the time, Aker was a mostly affluent, green suburban community, and the merger was unpopular in Aker.
The municipality developed new areas such as Ullevål garden city (1918–1926) and Torshov (1917–1925). City Hall was constructed in the former slum area of Vika from 1931 to 1950. The municipality of Aker was incorporated into Oslo in 1948, and suburbs were developed, such as Lambertseter (from 1951). Aker Brygge was constructed on the site of the former shipyard Akers Mekaniske Verksted, from 1982 to 1998.
The city and municipality used the name Kristiania until 1 January 1925 when the name changed to Oslo. Oslo was the name of an eastern suburb - it had been the site of the city centre, until the devastating 1624 fire. King Christian IV of Denmark ordered a new city built with his own name; Oslo remained a poor suburb outside the city border. In the early-20th century, Norwegians argued that a name memorialising a Danish king was inappropriate as the name of the capital of Norway, which became fully independent in 1905.
In the 2011 Norway terror attacks, Oslo was hit by a bomb blast that ripped through the Government quarter, damaging several buildings including the building that houses the Office of the Prime Minister. Eight people died in the bomb attack.
Oslo