Bergen, historically Bjørgvin, is a city and municipality in Vestland county on the west coast of Norway. As of 2022, its population was roughly 289,330. Bergen is the second-largest city in Norway after national capital Oslo. The municipality covers 465 square kilometres (180 sq mi) and is located on the peninsula of Bergenshalvøyen. The city centre and northern neighbourhoods are on Byfjorden, 'the city fjord'. The city is surrounded by mountains, causing Bergen to be called the "city of seven mountains". Many of the extra-municipal suburbs are on islands. Bergen is the administrative centre of Vestland county. The city consists of eight boroughs: Arna, Bergenhus, Fana, Fyllingsdalen, Laksevåg, Ytrebygda, Årstad, and Åsane.

Oslo 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.