Rio de Janeiro

Rio de Janeiro, also known simply as Rio, is the capital and largest city of the state of Rio de Janeiro. It is the second-largest city in Brazil after São Paulo, and the largest by international tourists. It has a population of 6 million in the city proper, and 13 million people in its metropolitan area as of 2025. It is also the sixth-most-populous city in the Americas.

Founded in 1565, the city was initially the seat of the Captaincy of Rio de Janeiro, a domain of the Portuguese Empire. In 1763, it became the capital of the State of Brazil. In 1808, when the Portuguese Royal Court moved to Brazil, Rio de Janeiro became the seat of the court of Queen Maria I of Portugal.

Under the leadership of her son, Prince Regent John of Braganza, Maria raised Brazil to the dignity of a kingdom within the United Kingdom of Portugal, Brazil, and Algarves. Rio remained as the capital of the pluricontinental monarchy until 1822, when the Brazilian War of Independence began.