Expo ’70 in Osaka was conceived in the late 1960s when the world was facing changing values in the midst of social and cultural turbulence. JA 113 is a reprint of selected articles originally published in the May 1970 issue of Shinkenchiku and May/June issue of JA, in commemoration of the upcoming Osaka-Kansai Expo 2025. The emphasis on high tech environments was evident in the Space Frame by Kenzo Tange which housed the Tower of the Sun by Taro Okamoto. The possibilities of advanced engineering were showcased by the Expo Tower by Kiyonori Kikutake and the air supported dome of the United States pavilion. Another highlight was the first ever IMAX film shown in the Fuji Group Pavilion by Yutaka Murata. All of these elements were part of a site master plan created by Kenzo Tange and Uzo Nishiyama. Text in English and Japanese.