The Citadel of Salah El-Din is one of the greatest medieval fortresses, built in the 12th century to defend Cairo. Perched on a high hill, it offers strategic views over the entire city. The complex includes the Mosque of Muhammad Ali, the Military Museum, and the Police Museum. Its massive walls and defensive towers reflect the brilliance of Islamic military architecture. For centuries, the Citadel served as the seat of power in Egypt, making it a key historical landmark.The complex includes the Mosque of Muhammad Ali, the Military Museum, and the Police Museum. Its massive walls and defensive towers reflect the brilliance of Islamic military architecture. For centuries, the Citadel served as the seat of power in Egypt, making it a key historical landmark.