Contemporary Havana can essentially be described as three cities in one: Old Havana, Vedado and the newer suburban districts. The city extends mostly westward and southward from the bay, which is entered through a narrow inlet and which divides into three main harbors: Marimelena, Guanabacoa and Antares. The Almendares River traverses the city from south to north, entering the Straits of Florida a few miles west of the bay.