What's Cooler Than The Park?

The simple answer is not much, but I'm sure it's more complicated than that. You have to consider hunger, fatigue, heat, cold, the company, distance, the play equipment, if it's an injury-free adventure, and probably how much sleep you got the night before. It's a complicated equation, but mostly not much is better than the park. What's your vote for coolest (man-made) playground on planet earth? Mine goes to Heckscher Playground in Central Park...three acres of awesome! What's yours? I know if you're name is Elle Cowger your vote goes to whatever Ikea you happen to be lucky enough to be at, but what about the rest of you? I'd be down for a year-long playground tour...t-shirts and everything.