the Stockholm Public Library and the Forest Cemetery, Skogskyrkogården Modernism characterized the style of the Stockholm International Exhibition (1930) and the development of the city as it grew in that decade. 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 with the introduction of the Stockholm metro. The modernist developments of Vällingby and Farsta where internationally praised. In the 1960s this suburban development continued but with the aesthetic of the times, the industrialised and mass-produced blocks of flats received a large amount of criticism. At the same time that this suburban development was happening the most central areas of the inner city were being redesigned. 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 is the ensemble of the House of Culture, City Theatre and National Bank building, designed by architect Peter Celsing. Notable buildings Museums Stockholm boasts some 70 museums, making the city host one of the largest numbers of museums in the world. Collectively, these museums are visited by over 9 million people per year. One of the most renowned museums is the Nationalmuseum, with the largest national collection of art: 16,000 paintings and 30,000 objects of art handicraft. The collection dates back to the days of Gustav Vasa in the 16th century, and has since been expanded with works by artists such as Rembrandt, and Antoine Watteau, as well as constituting a main part of Sweden's art heritage, manifested in the works of Alexander Roslin, Anders Zorn, Johan Tobias Sergel, Carl Larsson, Carl Fredrik Hill and Ernst Josephson. The Museum of Modern Art, or Moderna Museet, is Sweden's national museum of modern art. It has works by famous modern artists such as Picasso and Salvador Dalí. Other notable museums in Stockholm include: Nationalmuseum Skansen - An open air heritage museum and zoo Vasa Museum, dedicated to the restored Vasa, a ship that sank in 1628 The Nordic Museum with art and design from the Nordic countries The Stockholm City Museum The Museum of Medieval Stockholm The National Museum of Science and Technology The National Maritime Museum The Swedish Museum of