Buenos Aires

Buenos Aires, officially the Autonomous City of Buenos Aires, is the capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− global city, according to the GaWC 2024 ranking. The city proper has a population of 3.1 million and its urban area has a population of 16.7 million, making it the 21st most populous metropolitan area in the world.

It is known for its preserved eclectic European architecture and rich cultural life. Buenos Aires is considered one of the most diverse cities of the Americas.

The city of Buenos Aires is an autonomous district and is neither part of Buenos Aires Province nor its capital. The city limits were enlarged to include the towns of Belgrano and Flores, both now neighborhoods of the city. The 1994 constitutional amendment granted the city autonomy, hence its formal name of Autonomous City of Buenos Aires. Citizens elected their first chief of government in 1996. Previously, the mayor was directly appointed by the president of Argentina.