The theme park will be housed in a building complex in Tokyo's Ikebukuro called Sunshine City. The theme park will have a Dragon Ball area, a Naruto area, and an area for One Piece. There will also be an amusement area, a food court, and a gift shop. You can see a map below:
Don't imagine a huge, sprawling Disney style theme park. This will probably be closer to an indoor entertainment center. And not that there's anything wrong with that at all.
「週刊少年ジャンプ」のテーマパーク 池袋に2013年夏オープン [IT Media]