Yoyogi Koen day 2

On my second day of observing Yoyogi Koen I noticed some skateboarders at the entrance, which I find interesting because I've heard a lot of people go there to skate but from what I saw, it isn't really the greatest place to go. I assume that it must be a relaxing place to go to mess around and talk to some friends. All around the park area you can see this. The park has somewhat of a different feel from the city aspect of Tokyo, which is just outside the gates. You don't see much, if any, grass throughout Tokyo...not to mention wide open space.