The current Havana area and its natural bay were first visited by Europeans during Sebastian de Ocampo’s circumnavigation of the island in 1509. Shortly thereafter, in 1510, the first Spanish colonizers arrived from Hispaniola and began the conquest of Cuba. Havana is the capital city, boasting the largest port and becoming the leading commercial center of Cuba. The city proper has a population of 2.1 million inhabitants and it spans a total of 728.26 km2 (281.18 sq. mi) – making it the largest city by area, and the most populous one; also, the third largest metropolitan area in the Caribbean region. The city extends mostly westward and southward from the bay, which is entered through a narrow inlet that divides into three main harbours: Marimelena, Guanabacoa and Atares.