The capital is Lansing. Many of the larger communities have attracted small-scale manufacturing; others serve as important harbours. Cities of northern Michigan include Sault Sainte Marie, Petoskey, Ludington, Manistee, Cadillac, Alpena, Escanaba, and Traverse City, on Grand Traverse Bay. Although the northern portion of the Lower Peninsula is a productive farming area in places, the state’s strongest and most diverse agricultural foundation lies in southern Michigan—the area to the south of the lateral corridor between Bay City and Muskegon. Southern Michigan also contains most of the state’s large cities and industrial centres including Detroit (one of the largest in the country) and its many suburbs, as well as Flint, Saginaw, Lansing, Grand Rapids, Kalamazoo, and Battle Creek.