What is "radhusplassen"

Rådhusplassen ("The City Hall Square") is a square located between Oslo City Hall and the Oslofjord in Vika, Oslo, Norway. Previously used as a road and part of European route E18, it has since 1994 served as a recreational area. North of the square stands the city hall, to the south the fjord, to the east Akershus Fortress and to the east the former Western Railway Station.