Time of year
This is a building in Shinjuku. A very tall building rises symmetrically in the sky, which is very beautiful. This building has an observation room, and the view of Tokyo seen from it was very beautiful.
This government building offer free access to their observation deck. The queue was not too long and security officer will check you bag. They also offer free tour around tokyo metropolitan building.
The building has two towers, we went on a Saturday and there was no wait in line. The views are awesome, one tower has a piano that people take turns playing. Both have tiny gift shops and coffee and light snacks. As everywhere in Tokyo people are out of this world polite
Many people visit this building to get good views of Tokyo. On a good day, you may even see Mt Fuji in the distance. Can visit day or night. There are two tall towers. Entry is via the back. Just ask for directions. We had to queue. Best reason to visit, its free.
About 2 min walk from Hilton Tokyo. Free access to the observation deck. Phenomenal view of Tokyo. Virtually no lines. A seamless experience. Currently have 2020 Tokyo Olympic exhibit as a bonus