Dear all,
I hope you enjoyed your summer,
During my relatively pleasant stay in my town's library, I found an interesting book, published by Taschen, about 100 famous views drawn by Hiroshige.
This first map, found on the internet, shows precisely the shape of the old genuine city of Tokio, Edo. 
This second map, from the book, is an abstraction of it. The most interesting thing from my point of view, is the sketch at the bottom on the right. The rivers enclose, first the city, and finally the palace.
One conclusion could be that the city, could be drawn and maybe should be, from its rivers, channels and from its centre, the imperial palace.
