Restaurateur Danny Meyer, of Gramercy Tavern and Eleven Madison Park fame, has mastered an American summertime tradition: the snack stand. Plump, Chicago-style hot dogs, juicy hamburgers, perfectly crisp French fries and irresistible frozen custards are all on the menu at this quaint shack in the heart of the Flatiron’s well-manicured Madison Park. Get ready to stand in line—New Yorkers are wild about the Shake Shack, which has spawned locations across the City.