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By the "Río de la Plata" estuary.
Río de la Plata (River of Silver)
Buenos Aires is the capital and most populous city of Argentina. Buenos Aires is located on the western shore of the estuary of the Río de la Plata.
It's 257 miles or 414 km from Buenos Aires to Mar Del Plata
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The estuary "Río de la Plata" (River Plate)
La Plata River.
Buenos Aires is on the southern shore of the Río de la Plata.
City of Buenos Aires. Rosario La Plata Córdoba
Río de la Plata.
Rio de la Plata is important because the Parana and the Uruguay rivers use the Rio de la Plata to drain into the Atlantic Ocean.
Around 13 million, including the surrounding areas that make up the Federal Capital.The population of Buenos Aires, Argentina is 2.891 million people. The nicknames of Buenos Aires are 'Paris of South America' and 'Queen of the Plata.'