It is within this climate of modernism and mob involvement that in 1956 Fulgencio Batista hires the Catalan architect Josep Lluis Sert—who had worked with Le Corbusier in his atelier on 35 Rue de Sevres in Paris—and in collaboration with Paul Lester Wiener and Paul Schulz of "Town Planning Associates," and in accordance with CIAM, GATEPAC, and Functional City principles, as per the Atherns Charter of 1933, to produce a modernist master plan for the city of Havana.