Oslo, Christiania earlier (written and Kristian) is the capital and most populated of the common Norway. It has a population of 590,041 inhabitants and an area of 426.9 km square. Capital is increasing in terms of area. The municipalities of Akershus's
fylke form a metropolitan area inhabited by approximately 1.4 million people. Urban commune fylke Oslo them are the same entity. Neighboring municipalities are to the west, Baerum, north Ringerike, and Nittedal Lunner, Skedsmo and Lørenskog east, south Enebakk,
Skiing and Oppegård and Nesodden southwest peninsula.
The highest point is Kirkeberget (629 m), which is also the northernmost point of the city.