Philadelphia offers a vast array of fast and affordable food choices, and what you will probably notice first is the bounty of food-cart options. Almost every street corner in downtown Center City has multiple food carts. Touristy Love Park (JFK between 15th and 16th) is in many ways the heart of this scene, especially for lunch, and depending on the day of the week, you get a rotating cast of Philadelphia’s best. Jose Garces’ Guapos Tacos serves up creative gourmet tacos, like duck with kimchee and peanuts, at least twice weekly (usually Monday and Friday, but check Twitter @guapostacos to be sure). Lucky Old Souls (@LOSburgertruck) offers burgers with house-made (or is it truck-made?) condiments, while Pitruco Pizza (@pitrucopizza) has surprises like braised radicchio pizza with wild mushrooms and parmesan, and afterward you can satisfy your sweet tooth at one of many dessert and cupcake trucks, including Sweetbox and Buttercream. And if falafel is your tried and true, you will find the best down a couple of blocks at Falafel Truck (at the corner of 20th and Market).