Completed in 2021 in Nagakute, Japan. Images by ToLoLo studio. The average age is 38.6 years old (as of 2016). It is a publicly built and privately operated public facility with no specific purpose, built in.
A circular wooden structure with a diameter of 700 metres is under construction in Japan as part of architect Sou Fujimoto's masterplan for Expo 2025 Osaka.