STS062-089-038 Jacksonville, Florida, U.S.A. March 1994 Much of the early history and development of Jacksonville, northeast Florida's largest city, was tied to dark Saint Johns River that cuts through this expanding urban area. South of downtown, before the river narrows and changes direction, the river exceeds 5 miles (8 kilometers) in width. North of the city, meandering Saint Marys River and its broad floodplain form the border between northeast Florida and southeast Georgia before it empties into the Atlantic Ocean. Discernible are several highways (Interstate Highways 95, 295, and 10 and U.S. Highway 1) and three major airports--Jacksonville International Airport north of the city, Cecil Field Naval Air Station southwest of the city, and Jacksonville Naval Air Station south of the city along the west bank of the Saint Johns River. The darker landscape throughout the photograph shows concentrations of natural stands of vegetation, which, in many instances are poorly drained swamplands.