Peñón_of_Algiers
Peñón of Algiers (Spanish: Peñón de Argel, Arabic: حصن الصخرة, romanized: ḥiṣn aṣ-ṣaḵra) was a small islet off the coast of Algiers, fortified by the Kingdom of Spain during the 16th century. The islet was connected to the African continent to form a seawall and the harbour of Algiers.