New economic conditions and new technologies create new forms of space, while some of the older uses of urban space are being abolished or transformed, under the pressure of new activities and of the new means which make them feasible. Not only does this fact influence each of the spatial components, but it also influences the relations between them, in such a degree, that new terms have to be found, in order to demonstrate the city’s contemporary situation. Thus, ‘Metropolis’, gives ground to new concepts, like Metapolis, new terms, which seem to be already familiar in the international bibliography.The privatization of public space is the main key-concept proposed for the interpretation of public life today. This phenomenon concerns the dominance of shopping, the enforcement of its rules and conditions, not only in the multifunctional shopping malls but also in places such as airports, train and metro stations, museums and other cultural centers. The impact of this phenomenon was also observed in greater urban districts, which are organized according to the multifunctional shopping mall logic. The aforementioned phenomena are now evident in almost all the contemporary western world. The loss of the dominant role assumed by the public square in the activities of urban public life does not fail to influence the Greek city. At the expense of the public square and street, that is of the public urban environment of the city, some new “public” places develop successfully, as they attract increasing numbers of people. These places often contribute to the expansion of their area, which is usually the suburbs. In these areas commercial activity prevails over all activities of the public realm, once one of the major functions to be traditionally encountered in any public area and which nowadays is redefined through consumerism, a universal phenomenon.For most of these new places, which are by rule privately owned but for “public use”, the “public” nature of their character is often disputed; the meanings of participation, appropriation and public concern, the freedom of movement and access are not always self evident, something which used to be the case in a traditional public space. The present paper aims to examine the “experienced” reality of these new public spaces within a Greek city with a large population, Thessaloniki. Four main questions orientate our study: How does contemporary public life evolve within the specific city and to which types of space does it relate to? Which are the identity and the ambience of these new public spaces? To what extent do users appropriate these spaces and from which factors is this influenced? With which criteria do the users evaluate these places?The field research was chosen as the means to exploring the users’ behavior. 45 individuals of different gender, age, sociological and professional background formed the sample for this research. The data was collected by means of interviews. The discourse of the people asked was analyzed following the techniques of semiotics and context analysis. The qualitative analysis that we have chosen led us to conclusions related to the questions derived from the initial theoretical investigation of the topic of the present research.