The Dominican Republic comprises the eastern five-eighths of Hispaniola, the second-largest island in the Greater Antilles, with the Atlantic Ocean to the north and the Caribbean Sea to the south. It shares the island roughly at a 2:1 ratio with Haiti, the north-to-south (though somewhat irregular) border between the two countries being . To the north and north-west lie The Bahamas and the Turks and Caicos Islands, and to the east, across the Mona Passage, the US Commonwealth of Puerto Rico. The country's area is reported variously as (by the embassy in the United States) and , making it the second largest country in the Antilles, after Cuba. The Dominican Republic's capital and largest city Santo Domingo is on the southern coast.