Expo 2025 Osaka. A circular wooden structure with a diameter of 700 metres is under construction off the coast of japan as part of architect sou fujimoto's masterplan for expo 2025 osaka. Half a century has passed since the japan world exposition osaka.

Expo 2025 osaka will be held on yumeshima island in osaka bay. This is the third time osaka, which is in the kansai region of honshu, will host the world expo;