If you want to take your date out for a romantic night, this is the place to be. In my opinion the World Trade Center's Observation Deck has the most stunning view in Tokyo, because you have a great view on the the Tokyo Tower an can see Tokyo's light light up when the sun is setting. There are comfortable chairs and benches and it is not very crowded either. The ticket price is good too, 620 yen pp. Also a great place to show to first timers in Tokyo