Forte de Santo Amaro
Oeiras e São Julião da Barra, Paço de Arcos e Caxias, Portugal · built 1659
The Fort of Santo Amaro do Areeiro, also known as the Forte Velho (Old fort) or Fort of Areeiro, is located on the right bank of the River Tagus in the municipality of Oeiras in the Lisbon District of Portugal. Construction began in 1647 under the direction of António Luís de Meneses and was completed in 1659.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).