Largest metro systems in the world.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...est_metros.jpg
Previously:
https://www.homemadetools.net/forum/...498#post193034
https://www.homemadetools.net/forum/...378#post188917
https://www.homemadetools.net/forum/...950#post194787
https://www.homemadetools.net/forum/...323#post185120
