The successful NYC chain’s only actual “shack,” this was the original, set in lovely Madison Square Park, and still attracting hordes of diners. When the weather’s good (there’s no indoor seating here), there are few more delightful places to dine in Manhattan. And though many will argue, I think they serve the best burger in Manhattan: always juicy, high-quality meat, with the perfect bun-to-patty ratio. The shakes are pretty orgasmic, too. If you have kids, grab a burger, some fries, a shake, and then head to the nearby playground for dinner.