Claim: Rio de Janeiro is a metropolis.

Rio de Janeiro -LRB- -LSB- ˈriːoʊ_di_ʒəˈnɛəroʊ , _ - deɪ_ʒə - , _ - də_dʒə - -RSB- -LSB- ˈʁi.u d -LRB- ʒi -RRB- ʒɐˈnejɾu -RSB- ; River of January -RRB- , or simply Rio , is the second-most populous municipality in Brazil and the sixth-most populous in the Americas . The metropolis is anchor to the Rio de Janeiro metropolitan area , the second-most populous metropolitan area in Brazil and sixth-most populous in the Americas . Rio de Janeiro is the capital of the state of Rio de Janeiro , Brazil 's third-most populous state . Part of the city has been designated as a World Heritage Site , named `` Rio de Janeiro : Carioca Landscapes between the Mountain and the Sea '' , by UNESCO on 1 July 2012 as a Cultural Landscape .   Founded in 1565 by the Portuguese , the city was initially the seat of the Captaincy of Rio de Janeiro , a domain of the Portuguese Empire . Later , in 1763 , it 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 . This is one of the few instances in history that the capital of a colonising country officially shifted to a city in one of its colonies . Rio de Janeiro 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 when the capital was transferred to Brasília .   Rio de Janeiro has the second largest municipal GDP in the country , and 30th largest in the world in 2008 , estimated at about R$ 343 billion -LRB- IBGE , 2008 -RRB- -LRB- nearly US$ 201 billion -RRB- . It is headquarters to Brazilian oil , mining , and telecommunications companies , including two of the country 's major corporations -- Petrobras and Vale -- and Latin America 's largest telemedia conglomerate , Grupo Globo . 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 output 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 , samba , bossa nova , and balneario beaches such as Barra da Tijuca , Copacabana , Ipanema , and Leblon . In addition to the beaches , some of the most famous landmarks include the giant statue of Christ the Redeemer atop Corcovado mountain , named one of the New Seven Wonders of the World ; Sugarloaf Mountain with its cable car ; the Sambódromo -LRB- Sambadrome -RRB- , a permanent grandstand-lined parade avenue which is used during Carnival ; and Maracanã Stadium , one of the world 's largest football stadiums .   Rio de Janeiro was the host of the 2016 Summer Olympics and the 2016 Summer Paralympics , making the city the first South American and Portuguese-speaking city to host the events , and the third time the Olympics were held in a Southern Hemisphere city . The Maracanã Stadium held the finals of the 1950 and 2014 FIFA World Cups , the 2013 FIFA Confederations Cup , and the XV Pan American Games .   The city is divided into 33 administrative regions .