When Paul Noritaka Tange won the rights to design the Aquatics Centre for the 2020 Tokyo Olympics, one of the first things he did was to visit the grave of his father: the revolutionary Pritzker-winning architect, Kenzo Tange.

"I wanted to tell him I'd grown enough to do this, too. That the office he founded was still fighting on," Paul, 63, said of his father, who died in 2005 at 91.