Second of six parts

The eyes of the world will be on Tokyo for more than just the 16 days that it hosts the 2020 Olympics, as the concept of legacy gains more importance for global sporting mega-events.

"I think what Tokyo can learn from Rio is that without a compelling case for legacy, a city should not host the games," 2016 Rio Olympics spokesman Mario Andrada told The Japan Times during a recent interview in Tokyo. "Because it is a really expensive venture, and only a well-structured, tangible, clear legacy can justify the public spending on an adventure like this."