With its 634 meters high Tokyo Skytree tower is at this time the second biggest tower in the world.
Located on the northeast side of Tokyo, you can go on its decks at 350 or 450 meters high.
From the observatory, you can enjoy a very nice view of Tokyo and if you are lucky, see Mount-Fuji.
If you came as a photographer, you will appreciate that tripods are allowed as long as you don't disturb other customers.
Here are some views of Tokyo from the 350M high deck.