From the finished city to the unfinished city - This paper aims to combine communication and urban issues, moving from the concepts of identity and culture. The becoming of the city is the key of this work; in particular, city is seen as shifting from something finished and defined to something immaterial, whose borders are continuously changing. The Fordist city and its industrial production concentrated around industry are just a memory. The places which once hosted machines and workers has become locations for culture and loisir. Several consequences are implied in such trend: the emerging of the spatial concept of "periurban", and of some places as change symbols of the social morphology of the city: airports, highways, shopping malls. In the past, geographers and urban planners felt the urge to individuate borders and limits to the city; today, flexibility seems the prominent characteristic of such "new" places; in other words, flexibility is one of the most requested elements of periurban areas, which are trying to escape as much as possible from a regulated urban planning.
Key words: sprawl, unfinished city, CID (Common Interest Developments), periurban.