Forte de Albarquel
Setubal (São Julião, Nossa Senhora da Anunciada e Santa Maria da Graça), Portugal
The Albarquel Fort (Forte de Albarquel in Portuguese) is located on the beach of the same name, on the northern banks of the mouth of the river Sado, in the Municipality and District of Setúbal, in Portugal.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).