Labor Day: the unofficial end of summer. If you're in New York City for the holiday, don't give up on warm-weather activities just yet. Check out NYC's best rooftop bars, or learn how you can experience the Hamptons right here in Manhattan. Love the outdoors? Rent a CitiBike and hit the Hudson River Greenway, or explore these five NYC parks where you can dine outside. Speaking of dining, spend the long weekend sampling some of NYC’s best bites while exploring its famous landmarks, or beat the heat with a Blue Bottle coffee inside the new Met Breuer.