The Tokyo Metropolitan Government plans to scale down facilities for the 2020 Summer Games once the sports extravaganza is over, drawing a lesson from London's post-Olympic management.

After the London hosted the Olympics in 2012, some venues were converted to accommodate a smaller number of spectators.

In March, the newly refurbished and converted Aquatics Center opened in Queen Elizabeth Olympic Park with a total seating capacity of 2,500, reduced from 17,500 for the Olympics.