The Tokyo Tower.
Looks strikingly like the Eiffel Tower.
So it's like seeing two places at once! Ha
its for sure a must see, on a clear day you can see for miles and miles. There is a Tony Café uptop so you can sit and have some wine and enjoy the views.
I believe it was about 900 yen to get in, which is about $9.00usd.
it's fairly easy to find once off the train as well.
If you guys are going to Japan I highly recommend downloading the app Hyperdia, it's so easy to figure out the stations and which routes to take where.
espeically since mostly everything is in Japanese.
The Tower is beautiful and will give you the best views, however, there is the Sky Tower as well. That one is the Worlds Tallest Tower.
Either one is cool, I just opted for the more traditional tower.