Shinjuku Station consistently holds the Guinness World Record for the world's busiest transport hub. In 2026, it is estimated that over 3.5 million people pass through the station every single day. To put that in perspective, that is roughly equivalent to the entire population of Connecticut or a city like Berlin moving through a single building daily. The station features over 200 exits and serves as a confluence for the JR lines, Tokyo Metro, Toei Subway, Odakyu, Keio, and Seibu lines. With the "Grand Terminal" renovation project underway in 2026—aimed at better connecting the East and West sides—the station remains a complex "labyrinth." For a high-value visit, travelers are advised to use digital navigation apps, as even locals frequently get lost in the sheer volume of humanity and the thousands of shops and restaurants packed within the station's footprint.