djamaâ el djazaïr (mosque of algeria, in arabic: جامع الجزائر); or great mosque of algeria (in arabic: مسجد الجزائر الأعظم) is a mosque in the process of completion, located in mohammedia in algiers. is the largest mosque in algeria and africa and the third largest mosque in the world in terms of the total area after each of great mosque of mecca in mecca and al-masjid an-nabawi mosque in medina.