Interestingly, a long time ago, I took a taxi from hotel to client. As has been mentioned before, most of Tokyo has no street names. The doorman looks up the address in an enormous map book, dealing with Chome, block no, building no, etc. Off we went. We arrive, taxi driver shows me the building. Drives off. Its the wrong building, he was lost. I had no cluster of helpful Japanese, in deed no English spoken. Luckily I found a pay pho e, and rang client. They then directed me!