Though it’s really just another coffee shop, the Starbucks at the Shinjuku intersection is one that offers a great view of a hugely busy intersection. It is a good place to just sit quietly and have your cup of coffee and see the world go by down below.
Though it’s a pretty big shop, it’s pretty crowded, so sometimes you may need to hang around before you find a place to sit. So when you do find that empty seat, hang onto it!