The Triathlon and rowing took place in Tokyo Bay. It's the only actual 'waterfront' Tokyo has. And it's the only straight bit of water going. The rivers twist and turn all over the place. Although thinking about the British mens fours and their wayward steering, maybe that was what they had trained for...
The marathon was held in Sapporo, a city many hundreds of miles to the north of Tokyo on a completely different Island. I offer no defense of their decision to showcase none of their (quite nice) city and (very) nice island.
I bloody love Tokyo but it has a face that only it's mother could love. In daytime at least. At night it's a neon wilderness and comes alive on the beauty front.
Unfortunately despite having a big population Tokyo isn't actually a particularly big city. There are a lot, a hell of a lot, of buildings crammed into that relatively small space. And most of them are square, grey and uninspiring. It's not really a city that has too many immediate attractions or 'wow' vistas. It's a city whose charm and beauty is found through experiencing its many disparate parts. You start off thinking it's a pretty ugly place but slowly it reveals itself to you until one day you think its the greatest city on earth.
I reckon if this had been a normal year and the journalists and tv crews had been allowed out of their covid bubble we would have seen a lot more of the city. As it was all we got was the grey, desolate edifices. Which is why I loved the BBC studio. That tapped in a little to the vibe and style of the city.
If I go to Japan, which I hope I will, I would only go to Tokyo to see this https://en.wikipedia.org/wiki/Nakagin_Capsule_Tower and then move along.
Capital cities are rarely the most interesting ones.