As part of the One Piece 20th Year Anniversary, One Piece Tower in Tokyo, Japan will be FREE for children (infants and elementary school students) the last Saturday of every month!
The first free Saturday will be March 25th, and will continue through December 30th. That is a savings of 1,500 to 1,600 yen, which you can use to buy snacks now! Haha.
So if you are in Tokyo, then make sure to enjoy Tokyo Tower and One Piece!