Tokyo Subway Guide
Tokyo has the world's most extensive train, subway, bus, monorail and taxi
system. The subway trains are often the fastest and cheapest way to get from
one destination to another. Tokyo is still building new subway and train
lines. You should get the newest subway map, a map that is bi-lingual, and
a map that is easy for you to understand.
Our office is in Iriya, near the Iriya Station of the Hibiya Subway Line.
See http://imcbook.net/address.htm
Best map in English and Japanese -
tokyometro
Also good but looks a little old (English) -
tokyosub