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.

and don’t be afraid to tap into Google Maps. At first glance, Tokyo's metro system may be overwhelming for travelers. If you can believe it, it's one of the easier maps of Tokyo to comprehend.

Tokyo’s Chiyoda Ward has reproduced a rare map from 1947 that shows how the postwar U.S. occupation of Japan had dominated and sprawled across the places locals walk past every day. It proved to ...