Jungle gym, sandboxes, swings and slides are all the things that parks are made from.  King of the mountain, digging up your shoes, climbing heights, and sliding down the fastest are all the things that kids are made from.  Regardless of the age or danger level there will be nothing more sightful or for that matter insightful as to watching the intriguing nature of kids attempting to do what we adults happen think twice about.  Sure we may have a moment where we kid up a stack of leaves while walking in the park or dig a hole to put our feet in, but there’s something about the pure and innocence of a child who will instinctively kick up the stack of leaves and go back stack it together again then repeat.  All for the raw laughter and enjoyment of the experience.