This is a list of notable submarine sandwich restaurants. It is sometimes prepared in the form of a submarine sandwich. Chicken parmigiana is also served as the filling of a submarine sandwich. It is also offered as a submarine sandwich. It is a variation on the steak submarine sandwich, as is the cheese steak. A Poor boy sandwich is the traditional name in St. Louis for a submarine sandwich. Quiznos was the second-largest submarine sandwich shop chain in North America, behind Subway. The "Ten Inch Hero" of the title refers to a large submarine sandwich. Larry's Giant Subs is a fast-food submarine sandwich chain headquartered in Jacksonville, Florida. Jersey Mike's Subs is an American submarine sandwich chain headquartered in Wall Township, New Jersey. Subway's core product is the submarine sandwich (or "sub").