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万博2025の「大屋根リング」が証明する――仮設建築は無駄である必要はない

Expo 2025's Grand Ring Proves Temporary Architecture Doesn't Have to Be Wasteful

大阪・関西万博のシンボル「大屋根リング」。閉幕後、その木材は被災地の復興住宅や記念碑へと生まれ変わる。"壊して終わり"ではない建築の未来とは。
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Many event buildings live only for a short time. After the visitors leave, the buildings are often broken and thrown away. The Grand Ring of Expo 2025 Osaka, Kansai shows a different idea. Designed by architect Sou Fujimoto, the huge wooden circle became the symbol of the Expo and expressed its message of “Unity in Diversity.” It combined modern building methods with traditional nuki joints used in Japanese shrines and temples. At about 2 kilometers around and 61,035.55 square meters, it was officially recognized on March 4, 2025 as the world’s largest wooden architectural structure. (expo2025.or.jp)

During Expo 2025, held from April 13 to October 13, 2025, the Ring was not only impressive to look at. It also worked as a practical space. It guided visitor movement around the site, protected people from rain, wind, and strong sunlight, and gave them a skywalk with wide views of the sea and the city. This is one lesson of the Ring: good architecture can be both beautiful and useful at the same time. (expo2025.or.jp)

The more important lesson came after the Expo closed. In a January 2026 official report, organizers said they had decided to keep about 200 meters of the northeast part of the Ring and develop the surrounding area as parkland. The same report says careful dismantling for reuse costs more than normal demolition, but the association accepted that extra cost because the Ring was an important symbol and sustainability was one of the Expo’s core ideas. (expo2025.or.jp)

The wood is also getting a second life. The report says that from June to November 2025, three public calls were held, and about 3,300 cubic meters of timber were set to be transferred to 46 recipients. Some of it is planned for public housing in Suzu, Ishikawa, after earthquake and flood damage. Some will go to a monument in Namie, Fukushima, and some to GREEN×EXPO 2027. From these facts, we can make a simple inference: the future of architecture may be buildings designed not only for opening day, but also for what comes next. A temporary building does not have to become waste. It can become part of the future. (expo2025.or.jp)

by EigoBoxAI
作成:2026/04/15 03:07
レベル:初中級 (語彙目安:1000〜2000語)

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