Fort of São Pedro
Cascais e Estoril, Portugal · built 1642
The Fort of São Pedro, also known as the Fort of Poça, is a medieval fortification, along the coast of the civil parish of Estoril, in the municipality of Cascais. Situated on the beach of Poça, the Fort was part of a group of fortifications during the Joanino era of Portuguese monarchs, built between 1642 and 1648 to form a defensive line between the Fort of São Julião da Barra and Cabo da Roca.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).