The Philadelphia Cheesesteak: Pat's King of Steaks, Philadelphia

Located on a busy South Philadelphia intersection across from archrivals Geno's Steaks, Pat's King of Steaks was founded in 1930 by Pat and Harry Olivieri. The brothers are widely believed to have created the Philadelphia steak sandwich in 1933 at a hot dog stand in the nearby Italian Market neighborhood. The classic article consists of thinly shaved steak, grilled with chopped onions and served on a hoagie roll. Cheese was a later addition, courtesy of neighboring Geno's. Nonetheless, Pat's can claim the earlier origins—and is also open 24 hours for Philadelphia's hungry night owls.