There's a lot to be said about Tokyo and how easy it is to get around on foot and live without a car. It's kind of a surreal dreamscape of unbroken high density urbanity that makes you rethink how large highly functional cities can be.

One of the challenges for seeing it on foot though is how effective the public transit is, especially the underground rail systems. You end up seeing islands around transit stations but not the stretches in between. It's totally worth it sometimes to skip the train and just walk the entire way as there's lots of interesting stuff in the "out of the way" bits of the city.