I'm a big fan of public transportation systems and was engaged in a thread (http://www.flyertalk.com/forum/u-k-i...er-square.html) about the system in London.

Having just gotten back from Tokyo, I was wondering the same thing. Are there maps out there that show the geography of Tokyo's system versus the one I always see that shows all the stations but doesn't really offer insight into their relative location?

Also, there's often very long walks to transit between stations - anything out there that gives guidance on that?

I'm interested from both a practical matter for navigation when in town, but also from a general interest perspective.

On this last trip, I visited the Metro Museum which was great fun but have yet to make it to the JR East museum.

Thanks!