As the Osaka Expo comes to an end next week, academics and diplomats, as well as a petition a high schooler founded, are calling for its Grand Ring, the largest wooden structure in the world, to be fully preserved. https://www.japantimes.co.jp/news/2025/10/10/japan/society/calls-for-full-preservation-of-osaka-expo-grand-ring/?utm_medium=Social&utm_source=mastodon #japan #society #2025osakaexpo #osaka #architecture