A bird's-eye view of the whole Shinjuku area, it feels super cool. But when you go, you must bring polarization lens, because there is glass, so it is not very good to take pictures. And if you go outside of working hours. Take the elevator from the negative first floor. We went there at 9:30. The doors were closed and we looked for the entrance for half a day. There are also various souvenirs and cakes on the viewing platform. It's slightly more expensive than other places, but think about the price of things on the top of Mount Huangshan and Mount Tai. It's much more conscientious here. Again, it's free here.