The tallest structure of the three is the Tokyo Metropolitan Main Building No.1, which is 48 stories tall and splits into two towers at the 33rd floor. Both towers have observation decks on each of their 45th floors, which at 663 feet (202 meters) high offer panoramic views—on a clear day you can see Mt. Fuji to the west. The view from the South Tower is considered slightly better but the North Tower remains open later, which makes it more suitable for night viewing.
Sightseeing tours of Tokyo—which take place during the day and night, and typically transport you by bus or bike—often include a visit to the observation decks. Visiting the Tokyo Metropolitan Government Building as part of a larger sightseeing tour is a great way to save time and avoid the hassle of navigating your own way there.