Answer by taking a quote from the following article:

Nelson Piquet Souto Maior (Portuguese pronunciation: ['newso pi'ke], born August 17, 1952), known as Nelson Piquet, is a Brazilian former racing driver and businessman. Since his retirement, Piquet has been ranked among the greatest Formula One drivers in various motorsport polls. Piquet had a brief career in tennis before losing interest in the sport and subsequently took up karting and hid his identity to prevent his father discovering his hobby. He became the Brazilian national karting champion in 1971-72 and won the Formula Vee championship in 1976.

Piquet was born in Rio de Janeiro, then the capital of Brazil, the son of Estacio Goncalves Souto Maior, a Brazilian physician. His father moved his family to the new capital, Brasilia, in 1960 and became Minister for Health in Joao Goulart's government (1961-64). Piquet had two brothers, Alexis, and Geraldo, and a sister Genusa. Piquet was the youngest of the children.  Piquet started kart racing at the age of 14, but because his father did not approve of his racing career, he used his mother's maiden name Piquet (of French origin and pronounced as "Pee-Ke") misspelt as Piket to hide his identity.  His father wanted Piquet to be a professional tennis player and was given a scholarship at a school in Atlanta. Piquet started playing tennis at the age of 11. He won tournaments in Brazil and eventually took a trip to California to test his skill against tougher American players. During his time, he had learned to speak English and greatly matured. His short tennis career saw Piquet to be prized as a good player but not thought sufficiently exciting for the sport, which led him to devote his career to motor racing.  Piquet dropped out of a University two years into an engineering course in 1974. He was subsequently employed in a garage to finance his career, since he had no financial support from his family  Upon returning to Brazil, Piquet and three friends brought a 20 hp cart and participated in Brazilian go-karting (1971 and 1972 national champion) and in the local Formula Super Vee 1976 championship, on the advice of Emerson Fittipaldi, the first Brazilian Formula One world champion who sold the chassis for the Brazilian Formula Vee champion car with his brother, he arrived in European motor sports hailed as a prodigy. In the 1978 British Formula 3 season he broke Jackie Stewart's record of the most wins in a season.

Where was Piquet born?
Piquet was born in Rio de Janeiro, then the capital of Brazil,