The Fortaleza de Santo Amaro da Barra Grande, also referred to as Fortaleza de São Miguel, Fortaleza da Praia Grande and Fortaleza da Barra Grande, is located to the southeast on the island of Santo Amaro, between Praia do Góis and Praia de Santa Cruz dos Santos. navigators.
The Fortress was built in 1584 with the aim of protecting the access channel to what is now the Port of Santos, which was already a haven for ships at that time.
Access to the fortress can be done via Santa Cruz dos Navegantes or, by boat, departing from the Edgard Perdigão Bridge, in Santos.