Forget pricey tickets and velvet ropes-this weekend, the circus is coming to town, and you won't need to shell out a dime to see it. The brand-new Down to Earth Festival is set to turn New York City parks and plazas into open-air stages, with a lineup that mixes contemporary circus, high-wire thrills, opera installations and participatory dance. It all kicks off Friday, August 29, and runs through September 7.