Stockholm City Hall (Stadshuset) is Stockholms most iconic building and the venue for the prestigious Nobel Prize banquet held annually on December 10th. Built in 1911-1923 in National Romantic style, this red-brick masterpiece features the famous Blue Hall (actually made of red brick), the stunning Golden Hall with 18 million gold mosaic tiles, and a 106-meter tower with three golden crowns. The building can only be visited by guided tour, which reveals the magnificent halls used for Nobel celebrations.