São Pedro Fort
Azores, Portugal
The Fort of São Pedro, also known as the Fort of the Port of Biscoitos, is located in the parish of Biscoitos, in the municipality of Praia da Vitória, on the north coast of Terceira Island in the Azores. It was designed to defend the Biscoitos bay against attacks by pirates and privateers, who were once frequent in this region of the Atlantic Ocean. It crossed fire with the Fort of Rua Longa, to the east.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).