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Largest free-span wooden structure

Largest free-span wooden structure
Who
The Odate Jukai Dome
What
178 metre(s) per second
Where
Japan (Odate,)
When
1997
The longest single-span self-supporting wooden structure is the Odate Jukai Dome in Odate, Japan, which is a dome-shaped building that measures 178 m (584 ft) on its longest axis and 157 m (515 ft) on its shortest. It consists of an opaque membrane stretched over a cedar and steel frame constructed from 25,000 Akita cedar trees.