Tours of the facilities at National Olympic Stadium, the main venue for the 1964 Summer Games, are finding new popularity now that the Olympics will be coming back to Tokyo in 2020.

One of the backstage tours last week drew the full 20 people allowed, including families, a group of young women and some people old enough to remember the 1964 Olympics.

The visitors walked through the facilities for an hour and a half despite the 31.5-degree heat baking Shinjuku Ward.