Rio de Janeiro | History, Population, Climate, & Facts ...
Rio de Janeiro, in full Cidade de São Sebastião do Rio de Janeiro, byname Rio, city and port, capital of the estado (state) of Rio de Janeiro, Brazil.It is located on the Atlantic Ocean, in the southeastern part of the tropical zone of South America, and is widely recognized as one of the world’s most beautiful and interesting urban centres.. Although Rio de Janeiro continues to be the ...