Expo '70 (日本万国博覧会 Nihon bankoku hakuran-kai?) was a World's Fair held in Suita, Osaka, Japan between March 15 and September 13, 1970. The theme of the Expo was "Progress and Harmony for Mankind." In Japanese Expo '70 is often referred to as Ōsaka Banpaku (大阪万博). This was the first World's Fair held in Japan.