The archipelago is made up of the largest island, Berlenga Grande, and two groups of smaller islets, the Estelas Inlets and the Farilhões-Forcados Islets.
The Fort of São João Baptista (English: "Fort of St. John the Baptist") is located in the waters off the southeastern coast of Berlenga Grande, on a small islet connected to the island by a causeway/arch-bridge and anchorage to the north [REF].