In terms of a park this place is probably as good as it gets.
There's an outdoor pool, acres of grass, picnic tables, shady trees, beautiful trees and plants, a few hot dog vendors here and there, ice cream trucks, a restaurant, and a zoo!
This place get super busy during cherry blossom season and summer!
Lots of people bike, jog and just relax here.
Give this place a go (coming from someone who hates the great outdoors)