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.
In 1510 the Spaniards settled on a small island, the Peñón, north of Algiers (in modern Algeria).
They forced Sālim al-Tūmī (Selim-bin-Teumi) to observe the terms of a treaty with Spain, namely, to accept a Spanish presence and to pay tribute.
[2] Sālim al-Tūmī had to go to Spain to take an oath of obedience to Ferdinand of Aragon.