Argentina (Spanish: [aɾxenˈtina]), officially the Argentine Republic[A] (Spanish: República Argentina), is a country located mostly in the southern half of South America. Sharing the bulk of the Southern Cone with Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of 2,780,400 km2 (1,073,500 sq mi),[B] Argentina is the eighth-largest country in the world, the fourth largest in the Americas, the second largest in South America after Brazil, and the largest Spanish-speaking nation by area. The sovereign state is subdivided into twenty-three provinces (Spanish: provincias, singular provincia) and one autonomous city (ciudad autónoma), Buenos Aires, which is the federal capital of the nation (Spanish: Capital Federal) as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over part of Antarctica, the Falkland Islands (Spanish: Islas Malvinas), and South Georgia and the South Sandwich Islands.
Buenos Aires (/ˌbweɪnəs ˈɛəriːz/ or /-ˈaɪrɪs/; Spanish pronunciation: [ˈbwenos ˈajɾes]), officially Autonomous City of Buenos Aires, is the capital and largest city of Argentina. The city is located on the western shore of the estuary of the Río de la Plata, on the South American continent’s southeastern coast. “Buenos Aires” can be translated as “fair winds” or “good airs”, but the former was the meaning intended by the founders in the 16th century, by the use of the original name “Real de Nuestra Señora Santa María del Buen Ayre”, named after the Madonna of Bonaria in Sardinia. The Greater Buenos Aires conurbation, which also includes several Buenos Aires Province districts, constitutes the fifth-most populous metropolitan area in the Americas, with a population of around 15.6 million.