El triunfo de la voluntad
Riefenstahl was best known for her documentary film "Olympia" (1938), on the 1936 Summer Olympics in Berlin and her Nazi propaganda films, "Der Sieg des Glaubens" (1933), "Triumph of the Will" (1935), and "Tag der Freiheit" (1935), which are regarded by historians as among the greatest propaganda films of all time.