ShinjukuAbout Shinjuku, let me start by saying that Shinjuku Station is the world's busiest railway station, handling more than two million passengers every day. TWO MILLION !!!Like Shibuya, Shinjuku is also a business hub.. infact a bigger one! There are innumerable skyscrapers - west of the station is Shinjuku's skyscraper district, home to many of Tokyo's tallest buildings, including several premier hotels and the twin towers of the Metropolitan Government Office, whose observation decks are open to the public for free.