Well, in Philly (Philadelphia), you won't go wrong with a cheesesteak ("steak" in the local vernacular), tomato pie, pretzel, and water ice. These are some of the local favorites. If you were to order a cheesesteak, do try it "wit wiz," which is a type of processed cheese. It's not healthy but is a local treat! And make sure to eat your pretzel with mustard...safe travels if you make it to the USA.