Guanabara Bay is a large natural bay located in southeastern Brazil, primarily within the city of Rio de Janeiro. It covers an area of approximately 414 square kilometers and is known for its stunning scenery, surrounded by mountains and urban landscapes. The bay is an important site for shipping and tourism, featuring several islands and beaches. The bay is also home to diverse marine life and ecosystems, making it significant for environmental studies. Sugarloaf Mountain and Christ the Redeemer are notable landmarks that overlook the bay, attracting millions of visitors each year.