Brasilia is the federal capital of Brazil and the seat of government of the Federal District. The name is commonly spelled Brasilia in English. Administratively the city is located in the Federal District, which is in the Central-West Region. Physically it is located in the Brazilian Highlands. It has a population of about 2,562,963 (3,716,996 in the metropolitan area) as of the 2008 IBGE estimate, making it the fourth largest city in Brazil. However, as a metropolitan area, it ranks lower at sixth. It is listed as a UNESCO World Heritage Site. Brasilia is the largest city in the world that did not exist at the beginning of the 20th century.
Brasilia has the 5th largest GDP among Latin American cities, and the 3rd in Brazil.Its GDP per capita is by far the highest among the larger Latin American cities, at a high—for Latin American standards—average of around US $30,000.
As the national capital, Brasilia is the seat of all three branches of the federal government of Brazil. The city also hosts the headquarters of many Brazilian companies. Planning policies such as the location of residential buildings around expansive urban areas, as well as building the city around large avenues and dividing it into sectors, have sparked a debate and reflection on life in big cities in the 20th century. The city's design divides it into numbered blocks as well as sectors for specified activities, such as the Hotel Sector, the Banking Sector or the Embassy Sector. Brasília hosts 124 foreign embassies.
The city was planned and developed in 1956 with Lúcio Costa as the principal urban planner and Oscar Niemeyer as the principal architect. On April 22 of 1960, it formally became Brazil's national capital. Viewed from above, the main portion of the city resembles an airplane or a butterfly.The city is commonly referred to as Capital Federal, or simply BSB Residents of Brasilia are known as brasilienses or candangos (the latter referring to those not