You know. Where the giant insects in bright primary colors are? Where the ground is that squishy safety paving? Where there are obvious climbing structures? Near the loo that has the changing table? Where the sign says "CHILDREN'S ZOO"?
The playground is not the large fake rock formation designed to keep you out of the lion's exhibit. Yes, I know the tots *can* climb it. That does not mean they *may* climb it. Would you have them climb the chain link into the tiger habitat? They *can* do that, but I will wager you would not let them.