We have no scientific proof that this is the busiest pedestrian intersection in the world, but it definitely could be a contender.
Nevertheless, here is an example of why the city is interested in scramble crosswalks, explained earlier when talking about the new one hitting Westwood Village this week.




All the umbrellas make for an interesting visual.
Crazy. It looks almost planned.
I've been there, though not on a rainy day, it is an amazing experience to cross with everyone. Like an ocean of people.
If you want to see it from ground level, Google Maps Japan just implemented street view!