50 reasons why Tokyo is the greatest city in the world | CNNGoEditor's Note: Matt Alt, Hiroko Yoda, Melinda Joe, Andrew Szymanski, and W. David Marx, CNNGo Tokyo City Editor all contributed to this report. 1. The world's most sophisticated railwaysWith 13 subway lines and over 100 surface routes run by Japan Railways and other private companies, Tokyo's railway system seems like it was designed to win world records. It's rare to find a location in the met
