Just a beautiful park! It's so massive they even have a kick ass ( can I say that on yelp..?) train that drives you around the whole thing and have stops in between. I know that in early May this park has cool cherry blossom trees which blossom and fall only during that specific time period. After that...I guess they are naked? Anyways, I suggest seeing that one day, even though I have not seen it myself, I'm sure it's epic.
I went for a picnic here twice and never was disappointed by the wonderful greenery, slopes, hills. water etc. They have a water park (not that kind) with neat fountains and I stuck my feet in it. I'm not sure if you are actually allowed to do that but hey, it's nice to experience anyways. Plus other people were doing it. You know what they say, follow the crowd! I loved the small Japanese garden and the picturesque-ness of everything. They have ice cream carts too for your ice cream needs. I got a magnum almond in case y'all were wondering.
It's yes, free except that train. But I honestly loved the train and it's nice for lazy people like me who do not want to spend all day walking around the massive park. You are allowed one transfer meaning you can get off one stop and get on the train again without paying double. Adults are 4.50!
So please visit this park if you want to picnic hardcore. It's a great place!