Rio de Janeiro (, ; , January River), commonly referred to simply as Rio, is the capital city of the State of Rio de Janeiro, the second largest city of Brazil, and the third largest metropolitan area and agglomeration in South America, boasting approximately 6.3 million people within the city proper, making it the 6th largest in the Americas, and 26th in the world. Part of the city has been designated as a World Heritage Site, named "Rio de Janeiro: Carioca Landscapes between the Mountain and the Sea", identified by UNESCO on 1 July 2012 in the category Cultural Landscape.
Founded in 1565, by the Portuguese, the city was initially the seat of the Captaincy of Rio de Janeiro, a captaincy of the Portuguese Empire. It later, in 1793, became the capital of the State of Brazil, a State of the Portuguese Empire. In 1808, when the Portuguese Royal Court transferred itself from Portugal to Brazil, Rio de Janeiro became the chosen seat of the court of Queen Maria I of Portugal, who subsequently, in 1815, under the leadership of her son, the Prince Regent, and future King João VI of Portugal, raised Brazil to the dignity of a kingdom, within the United Kingdom of Portugal, Brazil, and Algarves. Rio stayed the capital of the pluricontinental Lusitanian monarchy until 1822, when the War of Brazilian Independence began. It subsequently served as the capital of the independent monarchy, the Empire of Brazil, until 1889, and then the capital of a republican Brazil until 1960.
Rio de Janeiro represents the second largest GDP in the country (and 30th largest in the world in 2008), estimated at about R$343 billion (IBGE/2008) (nearly US$201 billion), and is headquarters to two of Brazil's major companies—Petrobras and Vale, and major oil companies and telephony in Brazil, besides the largest conglomerate of media and communications companies in Latin America, the Globo Organizations. The home of many universities and institutes, it is the second largest center of research and development in Brazil, accounting for 17% of national scientific production—according to 2005 data.
Rio de Janeiro is one of the most visited cities in the southern hemisphere and is known for its natural settings, carnival celebrations, samba, Bossa Nova, balneario beaches such as Barra da Tijuca, Copacabana, Ipanema, and Leblon. Some of the most famous landmarks in addition to the beaches include the giant statue of Christ the Redeemer ("Cristo Redentor") atop Corcovado mountain, named one of the New Seven Wonders of the World; Sugarloaf mountain (Pão de Açúcar) with its cable car; the Sambódromo, a permanent grandstand-lined parade avenue which is used during Carnival; and Maracanã Stadium, one of the world's largest football stadiums.
The 2016 Summer Olympics and the Paralympics will take place in Rio de Janeiro, which will mark the first time a South American or a Portuguese-speaking nation hosts the event. It will be the third time the Olympics will be held in a Southern Hemisphere city. On 12 August 2012, at the 2012 Summer Olympics closing ceremony, Mayor Eduardo Paes received the Olympic Flag, via Jacques Rogge, from London Mayor Boris Johnson. Rio's Maracanã Stadium, which held the final of the 1950 FIFA World Cup, will host the final match of the 2014 FIFA World Cup. Rio de Janeiro also hosted the World Youth Journey in 2013.
Europeans first encountered Guanabara Bay on January 1, 1502 (hence Rio de Janeiro, "January River"), by a Portuguese expedition under explorer Gaspar de Lemos captain of a ship in Pedro Álvares Cabral's fleet, or under Gonçalo Coelho. Allegedly the Florentine explorer Amerigo Vespucci participated as observer at the invitation of King Manuel I in the same expedition. The region of Rio was inhabited by the Tupi, Puri, Botocudo and Maxakalí peoples.
In 1555, one of the islands of Guanabara Bay, now called Villegagnon Island, was occupied by 500 French colonists under the French admiral Nicolas Durand de Villegaignon. Consequently, Villegagnon built Fort Coligny on the island when attempting to establish the France Antarctique colony.
The city of Rio de Janeiro proper was founded by the Portuguese on March 1, 1565 and was named São Sebastião do Rio de Janeiro, in honor of St. Sebastian, the saint who was the namesake and patron of the then Portuguese Monarch D. Sebastião. Rio de Janeiro was the name of Guanabara Bay. Until early in the 18th century, the city was threatened or invaded by several, mostly French, pirates and buccaneers, such as Jean-François Duclerc and René Duguay-Trouin.
In the late 17th century, still during the Sugar Era, the Bandeirantes found gold and diamonds in the neighboring captaincy of Minas Gerais, thus Rio de Janeiro became a much more practical port for exporting wealth (gold, precious stones, besides the sugar) than Salvador, Bahia, which is much farther to the northeast. And so in 1763, the colonial administration in Portuguese America was moved from Salvador to Rio de Janeiro. The city remained primarily a colonial capital until 1808, when the Portuguese royal family and most of the associated Lisbon nobles, fleeing from Napoleon's invasion of Portugal, moved to Rio de Janeiro. The kingdom's capital was transferred to the city, which, thus, became the only European capital outside of Europe. As there was no physical space or urban structure to accommodate hundreds of noblemen who arrived suddenly, many inhabitants were simply evicted from their homes. There was a large influx of African slaves to Rio de Janeiro: in 1819, there were 145,000 slaves in the captaincy. In 1840, the number of slaves reached 220,000 people.
Between 1960 and 1975, Rio was a city-state under the name Guanabara State (after the bay it borders). However, for administrative and political reasons, a presidential decree known as "The Fusion" removed the city's federative status and merged it with the State of Rio de Janeiro, the territory surrounding the city whose capital was Niterói, in 1975. Even today, some Cariocas advocate the return of municipal autonomy.
The city hosted the 2007 Pan American Games and will host the 2014 FIFA World Cup final. It was announced on October 2, 2009, that Rio will host the 2016 Olympic Games, beating the finalist competitors Chicago, Tokyo, and Madrid. The city will become the first South American city to host the event and the second Latin American city (after Mexico City in 1968) to host the Games. The city hosted the World Youth Day in 2013, the second World Youth Day in South America and first in Brazil.