The organizers of the 2025 World Exposition in Osaka, western Japan, have invited the media to the construction site of the Grand Roof, the symbol of the venue.
The Grand Roof, also called the Ring, was unveiled to the media on Monday, showing the progress in its construction. Three consortiums have been commissioned to take part in the project.
When completed, the Ring will be one of the world's largest wooden structures with a circumference of 2 kilometers and a height of between 12 and 20 meters.
Source:https://www3.nhk.or.jp/nhkworld/en/news/20231127_28/