While the Olympic flame had been used for the first time in Amsterdam in 1928, in Berlin 1936 a marathon-like tour of the Olympic torch was introduced, from Olympia in Greece, crossing six frontiers with a journey of 3,000 kilometres (1,900 mi) to Berlin, through Greece, Bulgaria, Yugoslavia, Hungary, Czechoslovakia, Austria and Germany.[citation needed] The original idea of this Olympic torch relay was Carl Diem‘s, who was a political advisor to Propaganda Minister Joseph Goebbels, specialising in Olympic affairs.[citation needed] The Olympics were the subject of the propaganda film Olympia (1938) by Leni Riefenstahl.