This is a very recent Japanese exhibition structure in Osaka 2025 Expo.
It "covers" a site area of 11,000 sqm and employs large amounts of Cross-Laminated Timber (CLT) panels.
Some places have hailed it as the World's largest Timber Structure. A proportion of the CLT panels are will be disassembled after the Expo and returned for use in subseqent projects.
Not only is the design layout circular but the planned re-use also demonstrates the evolving trend towards "circular" design and sustainability.
For more details see this ArchDaily Article
