Tokyo has what is considered to be the most extensive mass transit system in the world, and not only is it extremely clean, efficient and safe, is also one of the most confusing systems in the world given the fact that several different companies and systems actually operate within the city. The first and foremost is the JR (Japan Rail) East network, followed by two different metro networks, not to mention various private lines, and considering different maps show different systems it can be extremely mind-boggling for the first time traveller looking to get from their Tokyo hotel to a restaurant or garden, or from one of the shrines back…