National Park Service's 100th Birthday

Celebrate the centennial of the National Park Service at this free outdoor bonanza featuring music performances from Ramblin' Dan, DJ Questlove and a surprise guest, plus a super cool interactive event hosted by Bill Nye (you know, the Science Guy) where you can control the color of One World Trade Center's spire using a giant digital circuit board. Additional festivities include an ice cream social, educational stations where kiddos can learn about conservation and waste reduction and fun family activites like sand art and corn hole. All ages.