 As there were not enough architects in Turkey until the 1950s, various architects were invited by the government from Germany, Austria, Switzerland and France, in order to manage the rapid construction of the new capital Ankara.About 40 architects and urban planners designed and oversaw various projects (mostly in Ankara, and to a lesser extent in Istanbul and Izmir) between 1924 and 1942.Among them were Gudrun Baudisch, Rudolf Belling, Paul Bonatz, Ernst Arnold Egli, Martin Elsaesser, Anton Hanak, Franz Hillinger, Clemens Holzmeister, Henri Prost, Paolo Vietti-Violi, Werner Issel, Hermann Jansen, Theodor Jost, Heinrich Krippel, Carl Christoph Lörcher, Robert Oerley, Bernhard Pfau, Bruno Taut and Josef Thorak.