We couldn't imagine a more kid-friendly work for Mad. Sq. Art's summer exhibition: Three metal structures—a house overlooking a cliff, a Rococo-era hut and a flying ship all ranging from eight to 26 feet tall—make up Rachel Feinstein's magical, fairytale-like "follies," which she imagined as a theatrical backdrop in which park visitors become the actors. (We know what you're wondering, but no, unfortunately kids can't climb on the scuptures!) All ages.