The Japan World Exposition, Osaka, 1970 or Expo '70 was a world's fair held in Suita, Osaka Prefecture, Japan, between 15 March and 13 September 1970. Its theme was "Progress and Harmony for Mankind." In Japanese, Expo '70 is often referred to as Ōsaka Banpaku (大阪万博). It was the first world's fair held in Japan and in Asia.