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In 1345, Kamran Diba and Parviz Tanavoli, who had just returned from America, often gathered together with Roksana Saba (the daughter of Abul Hasan Saba) to chat about art. In those days, De Diba opened a Bauhaus-style architectural office at No. 29, Rasht Street, north of Polytechnic University. Diba’s architectural office was on the third floor of this building.