on Strandvägen. In the 20th century, a nationalistic push spurred a new architectural style inspired by medieval and renaissance ancestry as well as influences of the Jugend/Art Nouveau style. A key landmark of Stockholm, the Stockholm City Hall, was erected 1911–1923 by architect Ragnar Östberg. Other notable works of these times are the Stockholm Public Library by Gunnar Asplund and the World Heritage Site Skogskyrkogården by Asplund and celebrated architect Sigurd Lewerentz. In the 1930s modernism characterized the development of the city as it grew. New residential areas sprang up such as the development on Gärdet while industrial development added to the growth, such as the KF manufacturing industries on Kvarnholmen located in the Nacka Municipality. In the 1950s, suburban development entered a new phase, that had already started in the early 1930s, with the introduction of the Stockholm metro. The modernist developments of Vällingby and Farsta were internationally praised. In the 1960s this suburban development continued but with the aesthetic of the times, the industrialized and mass-produced blocks of flats received a large amount of criticism. At the same time that this suburban development was taking place, the most central areas of the inner city were being redesigned, known as Norrmalmsregleringen. Sergels Torg, with its five high-rise office towers was created in the 1960s, followed by the total clearance of large areas to make room for new development projects. The most notable buildings from this period include the ensemble of the House of Culture, City Theatre and the Riksbank at Sergels Torg, designed by architect Peter Celsing. Other celebrated works from the 1960s was S:t Görans Gymnasium (originally built as a school for women, the School of House work and Sewing) by Leonie Geisendorf. In the 1980s, the planning ideas of modernism were starting to be questioned, resulting in suburbs with denser planning, such as Skarpnäck. In the 1990s this idea was taken further with the development of an old industrial area close to the inner city, resulting in a sort of mix of modernistic and urban planning in the new area of Hammarby Sjöstad. The municipality appointed an official "board of beauty" called "Skönhetsrådet" in 1919 to protect and preserve the beauty of the city, still an active part of the city planning, and architecture debate in the city. Stockholm's architecture (along with Visby, Gotland) provided the inspiration for Japanese anime director Hayao Miyazaki as he sought to