The architect of the propaganda film "Triumph of the Will" is Leni Riefenstahl, a German filmmaker known for her controversial work during the Nazi regime. Released in 1935, the film chronicles the Nazi Party rally in Nuremberg and served as a powerful promotion of its ideological messages. Riefenstahl's innovative cinematography and techniques have made the film a subject of extensive analysis in both film studies and discussions about propaganda’s ethical implications, showcasing the complex relationship between art and politics.