Buenos Aires is the capital of Argentina, located in the South American continent, latitude 34º 36' and longitude 58º 26'. The city extends on a plain and has an area of 202 square km. They live there for approximately 3 million people. Adding the metropolitan area's population, the total population exceeds 10 million, making it one of the 10 most populated urban centers in the world. The Rio de la Plata and the Riachuelo are the natural limits to the east and south. The Avenue General Paz, which borders the city from north to west city limit. This avenue quickly the city and the Greater Buenos Aires, a densely population and industrial activity Buenos Aires was founded twice: The first in 1536. Don Pedro de Mendoza, Spanish colonizer, established the first settlement. He named: City of the Holy Spirit and Puerto Santa Maria del Buen Ayre. The second, and final, in 1580. Juan de Garay called the site Ciudad de Trinidad. In the nineteenth century the port was the arrival point for the great migratory promoted by the Argentine State to populate the nation. Spanish, Italian, Syrian-Lebanese, Polish and Russian immigrants provided Buenos Aires with the cultural eclecticism that sets it apart. Throughout the twentieth century, successive immigrations-internal Latin American countries and the Middle-finished picture of Buenos Aires as a cosmopolitan city where people live in different cultures and religions.