Expo '70 was a world's fair held in Osaka, Japan from March 15 to September 13, 1970. It was the first major international exposition held in Japan and attracted over 64 million visitors. The theme of the expo was "Progress and Harmony for Mankind," showcasing advancements in technology, culture, and the environment. The event featured pavilions from 77 countries, highlighting innovations and cultural displays. Notable attractions included the Space Pavilion, which featured a model of a lunar lander, and the Japanese Pavilion, which showcased traditional arts and crafts. Expo '70 left a lasting legacy on Osaka and inspired future expositions worldwide.