Rio de Janeiro and Niterói by Shores of Guanabara Bay, Brazil22.9S 43.2W
Guanabara Bay is an oceanic bay located in southeastern Brazil in the state of Rio de Janeiro. On its Western shore lies the city of Rio de Janeiro, and on its Eastern shore the cities of Niterói and São Gonçalo (all of which are visible as grey expanses).
Guanabara Bay is the second largest bay in area in Brazil, at 412 square kilometres (159 sq mi), with a perimeter of 143 kilometres (89 mi). The bayis 31 kilometres (19 mi) long and 28 kilometres (17 mi) wide at its maximum. Its 1.5 kilometre- (0.93 mi-) wide mouth is flanked at the eastern tip by the Pico do Papagaio (Parrot’s Peak) and the western tip by Pão de Açúcar (Sugar Loaf).