Buenos Aires (/bwejnYs [Yriz/ or /-ajrjs/; Spanish pronunciation: [bwenos aj~es]), officially the Autonomous City of Buenos Aires, is the capital and primate city of Argentina. The city is located on the western shore of the Ro de la Plata, on South America's southeastern coast.

Argentina is a vast country located in the southern part of South America. The eighth largest country in the world, it is the second largest country in South America after Brazil, and it's about one-third the size of the United States.