As most travelers know, Tokyo is huge. The city is urban sprawl at its most overwhelming, making finding the best places to eat, shop, see, let alone sleep, a downright chore. The city is broken ...

The city is too massive to be covered on foot ... If you can believe it, it's one of the easier maps of Tokyo to comprehend. Every informational sign posted both in and outside of metro stations ...

Just glancing at a map of the transit system conjures ... but each day some 10 million people ride Tokyo’s subways, more than New York City’s entire population. On a clear Saturday morning ...

A research institute has released a 3-D geological map showing the underground structure of Tokyo's 23 wards designed to help residents think about weak areas and better prepare for earthquakes.