Italy
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.
Listen to the audio guide for Saint Peter of the Bar Fortress Free on WIP — starts by itself when you arrive, even with the screen off