Well well, this is a great map, the first one even what placed Kourindou at the center of Gensokyo, like it was said in CoLA.
(BTW, not all fairies live in the Forest of Magic, as the 3MF live in a Giant Tree behind the Hakurei Shrine, and it is quite a special tree, because the last 5 chapters of Strange and Bright was about the tree, an Yukari was concerned with it as well. Dunno about it really, as it haven't been translated yet, but it looks like to be the largest tree of Gensokyo.)