Extensive openings in the form of multiple doors or high windows were done to allow cross ventilation to cool the interior. Several examples of building from this period are Citroen's Lawang Sewu (1907), Moojen's Kunstkring Art Gallery (1913) and Cirebon Kejaksan Station (1912). Art Deco in the Dutch East Indies was similarly influenced with Art Deco in the Netherlands. Art Deco evolved from earlier Berlage-type Rationalism. Characteristic include rich color, bold geometric shapes and ornamentation. The form is symmetrical and exudes technological progress and glamour. One of the earliest example of Art Deco appear in the design of the Semarang Poncol Station (1914). Examples of building of this style are Ghijsels's former KPM headquarters (1917) and Schoemaker's Jaarbeurs (1920). Gerber's Gedung Sate shows consideration of local architect in the form of its roof. Other variation in the period is Amsterdam School, a part of the international movement of Expressionism which appears around the 1920s as well. The style popularity is not as widespread as in the Netherlands, but influenced details of buildings in the Dutch East Indies. A form of Amsterdam School appear in Cirebon City Hall (1926) by J.J. Jiskoot with its expressive distorted form characteristic of Amsterdam School style. Amsterdam School influence also appear in buildings designed by Schoemaker who often collaborates with sculptors: The expressive relief of Grand Preanger Hotel (1929) and the sculptures of Bandung Jaarbeurs (1920). Later between 1920 and 1940, Art Deco evolved into a new style known in the Netherlands as Nieuwe Bouwen (Modernism) or Functionalism. The new architectural movement is largely influenced by German's Bauhaus and France's Le Corbusier. Instead of creating style on the facade, the architect creates style in the clear and logical arrangement of space. The preference is to use universal form such as cube or cylinder or curving horizontal lines and nautical motifs that are known as Streamline Moderne in the Anglophone world. Industrialization and material standardization plays a role. Albert Aalbers is the most representative expression of Nieuwe Bouwen in Indonesia, apparent in his design for Savoy Homann Hotel (1939), Denis Bank (1936), and the "Driekleur" (1937) in Bandung.