Every street crossing Canal Street between the Mississippi River and Rampart Street, which is the northern edge of the French Quarter, has a different name for the "uptown" and "downtown" portions. For example, St. Charles Avenue, known for its street car line, is called Royal Street below Canal Street, though where it traverses the Central Business District between Canal and Lee Circle, it is properly called St. Charles Street. Elsewhere in the city, Canal Street serves as the dividing point between the "South" and "North" portions of various streets. In the local "downtown" means "downriver from Canal Street", while "uptown" means "upriver from Canal Street". Downtown neighborhoods include the French Quarter, Tremé, the 7th Ward, Faubourg Marigny, Bywater (the Upper Ninth Ward), and the Lower Ninth Ward. Uptown neighborhoods include the Warehouse District, the Lower Garden District, the Garden District, the Irish Channel, the University District, Carrollton, Gert Town, Fontainebleau and Broadmoor. However, the Warehouse and the Central Business District are frequently called "Downtown" as a specific region, as in the Downtown Development District.