Hi there!
I loved the “Community Geoguesser” thread (even though I didn’t participate much)
and now I happen to have a sort of new “geoguesser quiz”.
This is a picture of a Japanese city.
The pictures is not about the ground or the territory: it’s about people. Actually people’s mobile phones positions. But since people tend to move along streets and to avoid empty spaces (such as the middle of a lake), I think this picture should be pretty much similar to the urbanization degree of the ground.
The ground has been divided into a grid of squares: 200x200 squares having a 500 meters side. So, that’s an area of 100x100 km. To my Italian eyes, that seems humongous.
Anyway, back to the quiz.
For some reasons, we don’t know which city that is. Privacy nonsenses.
My question is: could you identify that city?
To me, it looks like there’s some sort of water front. I see one main city center and a smaller one (or maybe a few), a regular grid of streets near the city center… but I can’t figure a way to answer the question. And I don’t know the answer!
But I think there’s enough meat to challenge our clever geoguessers. 
I didn’t post this under the “forum games” category because I think someone would rather talk about the picture source and the privacy issues involved, which I’m very interested in, so maybe this thread will be more than just a game. Let’s see.
100x100 km is such a big piece of territory!
