Abstract
Like the big Algerian cities, the urban expansion of Algiers is no longer done continuously from the center to the periphery,but progresses by leaps and tends to be structured around secondary poles whose size, functions and territorial influence vary from one case to another. The development of the city and the directions of its urbanization have been strongly planned, even if a large part of its peripheral districts is spontaneous. Spatial spread and dissociation of urban functions characterize these new urban spaces. Identifying these new spaces, apprehending the processes of urban growth that underlie the city of Algiers involves defining new spatial fields of analysis ranging from the city contained within its classical limits, to the agglomeration.then to the metropolitan area that projects the city away from its immediate peripheral territories. The metropolitan area is more difficult to delimit: its contours can be more vague and inevitably more questionable. In any case it is a space that extends well over the territories of neighboring wilayas. Algiers, Algerian development pole is confirming its role of command of a territory larger than the agglomeration,the metropolitan area.The city’s operating space continues to create a space of a new type. We will first attempt to gather the scientific arguments supporting the need for a metropolitan approach to give the actual dimensions of the urbanization mechanisms that characterize Algiers and its territories.
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