The park is divided to several area: Aquarium area, Bird watching area, green play field area, and seaside area. There is beach which you can enjoy family activities (no swimming).
The Aquarium is one of the biggest one in Japan. As the aquarium, this one has largest number of yearly visitors in Japan.
At the Bird watching area, you can enjoy birdwatching. The area is preserved so that wild bird can nest and live. Many photographers visit here to take a photo of those bird. One of the best bird watching spot in Tokyo.
There is also a huge Ferris wheel which has great view of Tokyo Bay area.