These twin-towers of bureaucracy have two observation decks (north and south), both on the 45th floor. The south deck provides excellent views over Shinjuku Gyoen National Garden and Yoyogi Park while the north deck is better for night views. The north deck also has a bar/restaurant and a gift shop.
2-8-1 Nishishinjuku, Shinjuku-ku, Tokyo 163-8001
Direct access from Tochomae Station on the Toei Oedo Line (Exit A4)
North deck: 9:30-23:00 (closed on the 2nd and 4th Monday each month). South deck: 9:30-17:30 (closed on the 1st and 3rd Tuesday each month)