Bahia de Todos os Santos is a large bay located in the state of Bahia, Brazil. It is the largest bay in Brazil and the second largest in the world. The bay is known for its beautiful islands, rich marine life, and historical significance, as it played a crucial role in the colonial era. The bay is surrounded by the city of Salvador, which is the capital of Bahia. Numerous islands, such as Itaparica and Maré, can be found within the bay. The area is popular for tourism, offering activities like sailing, fishing, and exploring its diverse ecosystems.