Saint Peter of the Bar Fortress
Luanda, Angola
The Fort São Pedro da Barra de Luanda, is located in the former Hill of Cassandama (Morro de Cassandama in Portuguese), now Angola Quiluanje neighborhood, in Luanda, Angola. It is the only fort in Luanda that was not completely built by the Portuguese, having been started by the Dutch.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).