This work is the third part a bigger one started by us under the same title presented in lAPS 10 and lAPS 11 Conferences. In the first two parts we analysed the data concerning to a number of urbanistic interventions carryed out in some districts of Barcelona. All these interventions had the purpose of revitalising areas wich had become despersonalized and environmentally degraded, because of a disproportionated, especulative, urbanistic boom. Many of this districts grew around old towns wich sorrounded the originary, walled city of Barcelona before 1897. The demographic growth and the inmigration waves led to the loss of their simbolic elements and their urban identity and they got included in the urbanistic metropolitan caos. Some years ago the people in charge of the urbanistic policy in Barcelona started carrying out interventions in the city, mainly in these districts, with two purposes: the first one trying to consolidate elements so that they could be integrated in the cognitive and simbolic schemes of the people living in these districts; the second one was trying to recover in an aesthetic and simbolic level all this areas and, by doing this, create a new, different, modern image of Barcelona.In this paper the data refering to the most important interventions collected in our previous works will be analysed. We'll consider these interventions as symbolic places and we'll see its influence both on the districts where they are placed and on its residents.In order to get a theorical approach to these data we will use a model based on the theorical pluralism (Munné, 1986), according to which we'll rise diferent perspectives:- formal-estructural: by analising the integrated elements in the urban estructure. - semiotic: by analising the city as a system of landmarks, signs and symbols, that's to say, analising the urban semantic range. - ideological-cultural: by analising the influence of power networks and its reflection on the city. - psycological-social: by analising the influence of the urban phenomenon on the psychological proceses by means of the Self theories applied to spaces (Proshansky, 1983, Hunter, 1987, Lalli, 1988), based on the Symbolic Interactionism perspective.