The Beauty of Tokyo Station
If you're coming to Japan for a short amount of time I recommend going to Tokyo Station and looking at it from some of the buildings around it. The station is absolutely beautiful and there are a lot of shopping buildings around it that have beautiful views of it. A lot of the buildings have really good restaurants on the top floor that you can look at the station. It's a wonderful way to enjoy your night.
Tokyo Station is a very iconic part of Japan and when I look at pictures of it makes me miss it so much so I recommend going once during your trip. Its a beautiful historic place that has been around since 1914 and is beautiful to look at while enjoying some good food in the area.