The Golden Hall (Swedish: Gyllene salen) is a banqueting hall in Stockholm City Hall. Measuring 44-metre (144 ft) in length, it received its name when its walls were decorated by mosaics created by the artist Einar Forseth on a proposal by the City Hall architect Ragnar Östberg. The hall is best known as the location of the ball after the annual Nobel Banquet in the City Hall's Blue Hall. History.
https://en.wikipedia.org/wiki/Golden_Hall_(Stockholm_City_Hall)