The American Radar is a visual and historical research documentary on art, architecture and design built from the biography and personal archive of the architect, artist and gallery owner Lanfranco Bombelli (Milan, 1921-Cadaqués, 2008). From microhistory, the history of European cultural construction is narrated and interpreted under the model of modern rationalism and the artistic avant-garde, when it returns, after the victory of the allies after the Second World War and in the framework of the Cold War, with the advertising intervention of the North American political and economic system. There are four scenarios: I The bombs, the reconstruction and the resurgence. Milan-Zurich, 1940-1950. II Visual Information for US in Europe in the Marshall Plan in the framework of the Cold War. Paris, 1950-1961. III The thaw. Cadaqués-Barcelona, 1959-1971. IV Local internationalism. Cadaqués, 1971-1982.