In the early 20th century the ideals of historicism were replaced by functionalism which in Denmark became popular after the Stockholm Exhibition of 1930. Functionalism broke with the former historical imitations and use of decorations to focus on materials and their function. Attention was paid to use of materials that could be mass-produced and tying form, function and technique together. In Aarhus the style is best exemplified by the University by C.F. Møller and Kay Fisker, the City Hall by Arne Jacobsen and Erik Møller and Klintegaarden by Hans Ove Christensen.