The 1970 World’s Fair (Expo ‘70), opened in Osaka 40 years ago. A total of 77 countries attended the event and the number of visitors surpassed 64 million people, making it one of the largest and best attended expositions in history. This was the first World’s Fair to be held in Japan, a nation that had experienced an extremely rapid period of development in the 1960s. The theme of the Expo was “Progress and Harmony for Mankind,” and the aim was to showcase the possibilities of modern technology to create a foundation for a high quality of life and peace throughout the world. Here are some photos and videos from the event.