Algeria and Algiers city was a place of born of many special  architectural typologies, in this paper we will see major works of the hybrid architecture created and  will discuss the different architectural typologies which was the result of  influence of the internal and external forces through the ages, including the Roman Empire, the Muslim conquest of the Maghreb, French colonization, and movements for Algerian independence and after it with the coming of modernism mouvement . we will have a compraraison work of original architectural typologies and the hybrid one.