The White City (, Ha-Ir ha-Levana; Al-Madinah al-Baydha’a) is a collection of over 4,000 buildings in Tel Aviv from the 1930s built in a unique form of the International Style, commonly known as Bauhaus, by Jewish architects who fled to the British Mandate of Palestine from Germany (and other Central and East European countries with German cultural influences) after the rise to power of the Nazis. Tel Aviv has the largest number of buildings in the Bauhaus/International Style of any city in the world. Preservation, documentation, and exhibitions have brought attention to Tel Aviv's collection of 1930s architecture. In 2003, the United Nations Educational, Scientific and Cultural Organization (UNESCO) proclaimed Tel Aviv's White City a World Cultural Heritage site, as "an outstanding example of new town planning and architecture in the early 20th century." The citation recognized the unique adaptation of modern international architectural trends to the cultural, climatic, and local traditions of the city. Bauhaus Center Tel Aviv organizes regular architectural tours of the city. History The concept for a new garden city, to be called Tel Aviv, was developed on the sand dunes outside Jaffa in 1909. Scottish urban planner Patrick Geddes, who had previously worked on town-planning in New Delhi, was commissioned by Tel Aviv's first mayor, Meir Dizengoff, to draw up a master plan for the new city. Geddes began work in 1925 on the plan, which was accepted in 1929. The view of the British Mandatory authorities seemed to have been supportive. In addition to Geddes, and Dizengoff, the city engineer Ya'acov Ben-Sira contributed significantly to the development and planning during his 1929 to 1951 tenure. Patrick Geddes laid out the streets and decided on block size and utilisation. Geddes did not prescribe an architectural style for the buildings in the new city. But by 1933, many Jewish architects of the Bauhaus school in Germany, like Arieh Sharon, had fled to the British Mandate of Palestine. Both the emigration of these Jewish architects and the closing of the Bauhaus school in Berlin were consequences of the rise to power of the Nazi party in Germany in 1933. The residential and public buildings were designed by these architects, and by architects born locally including Ben-Ami Shulman, who put the principles of modern architecture into practice. The Bauhaus principles, with their emphasis on functionality and inexpensive building materials, were perceived as ideal in Tel Aviv. The architects