Visitors to Tokyo will immediately notice the above-ground rail throughout the city, but hiding beneath the surface is the world’s busiest underground network, with around 8 million passengers using it daily. Two operators run the service and together have 278 stations on 13 lines. Wherever you want to go in central Tokyo, a subway station isn’t far away. Plus, the lines connect to Japan Rail and other above-ground lines to go farther afield. Taking the subway is much more efficient than driving or taking taxis, as there’s no chance of getting stuck in traffic.
Travelers can catch the subway while traveling independently around the city. A number of organized sightseeing tours also use the subway to get around.