Prince Albert of Belgium (later King Albert II of Belgium) (centre) meets with Emperor Hirohito (1901 - 1989) and Empress Nagako (Empress Kojun, 1903 - 2000) at the Imperial Palace, Tokyo, 20th April 1970. Prince Albert is in Japan to visit the 'Expo '70' World's Fair in Osaka. (Photo by Keystone/Hulton Archive/Getty Images)

Prince Albert of Belgium (later King Albert II of Belgium) (centre) meets with Emperor Hirohito (1901 - 1989) and Empress Nagako (Empress Kojun, 1903 - 2000) at the Imperial Palace, Tokyo, 20th April 1970. Prince Albert is in Japan to visit the 'Expo '70' World's Fair in Osaka. (Photo by Keystone/Hulton Archive/Getty Images)