Twin observatories of Tokyo Metropolitan Government building, located on the western side of JR Shinjuku Station, are 202 m high above ground.
Here you can get the panoramic view of the whole of Tokyo with several high-rise buildings in the foreground at Shinjuku.
If you have a good fortune, black-faced Mt. Fuji
is also visible in the distance on a clear summer day.
Nishi-Shinjuku is not only famous for "high-rise buildings" in the air, but "camera, computer and cellular phone shops" on the ground.