Because of the unusual angles of the streets, the buildings that occupy the corners of 9th and Passyunk are triangular in shape. One corner is taken up by Pat's, another by Geno's, and there's a never-ending debate about who makes the better cheese steak. Those who give the edge to Geno's often do so because they prefer their sandwich with provolone rather than Cheese Whiz. You can fill up on greasy fare at 4:00 a.m. if you're awake and hungry at that time of night.