This paper illustrates the impact of urbanisation strategies on the spatial organisation and urban functioning of the metropolis of Constantine, highlighting new trends in the occupation of space and their repercussions on inhabitants’ practices. The approach adopted is based on centrality, combining indicators of concentration, mobility and attraction. Changes will be examined through socio-economic statistics and field surveys, in the form of observations, counting and questionnaire interviews with residents. The results obtained illustrate clearly the organisational shift, reflected by the spatial redistribution of centrality attributes (populations, activities, services), and the urban functioning mode, which is increasingly taking a polycentric form, generating new forms of multidirectional mobility on increasingly larger scales.