The polluted waters of Guanabara Bay, where the Rio 2016 Olympic Games sailing events will take place. Rio de Janeiro is the second-largest city in Brazil, the sixth-largest city in the Americas, and the world's thirty-ninth largest city by population. The metropolis is anchor to the Rio de Janeiro metropolitan area, the second most populous metropolitan area in Brazil, the seventh-most populous in the Americas, and the twenty-third largest in the world. 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.
