The Salah Bey Mosque is Annaba's central Sunni mosque, located in the heart of the medina quarter near the Cours de la Révolution. It was built in the Ottoman period and extensively restored after Algerian independence. The interior is decorated with traditional Algerian tilework and carved plasterwork, and the courtyard provides a quiet refuge from the bustle of the surrounding market streets.
The mosque is named after Salah Bey, the 18th-century Ottoman governor of the Constantine province, who was responsible for several notable religious buildings in northeastern Algeria. Non-Muslim visitors should dress conservatively and ask locally about visiting times — as a working mosque, access outside prayer times is usually possible but not guaranteed.