Where is the world’s busiest train station?
With over 3.6 million passengers passing through its gates daily, Japan's Shinjuku Station is the world's busiest. Almost a city in and of itself, Shinjuku is actually a cluster of five stations that connect central Tokyo and its western suburbs. You'll find 36 platforms, 200 exits, arcades, towering stores, and giant shopping malls, all connected with a vast underground tunnel network and aboveground hallways.
Source: World Atlas