Grand Central–area workers and commuters alike are smitten by UrbanSpace Vanderbilt, a concrete-floored food court at the base of the Helmsley Building. The concept began in London, knitting together small, independent businesses under one roof or on a tented plaza. Here it has come alive at pop-ups like Mad. Sq. Eats and the Union Square Holiday Market. This is Urban Space Management's first brick-and-mortar endeavor in the City. Solo diners and groups gather at wood tables set up amid popular stalls such as Delaney Chicken, Roberta's, Red Hook Lobster Pound and Mimi's Hummus. There's something for everybody from the mix of purveyors: vegan baked goods, Asian hot dogs, gelato and luscious Dough doughnuts. For a serious cup of coffee, get in line at Toby's Estate.