The paper aims to establish the theoretical relationship between the people's link with definite surroundings and the social identity processes derived from the relation with these places (Valera & Pol, 1994; Valera, 1997). Two theoretical traditions are reported for this purpose: the concept of place-identity and its developments (Proshansky, Fabian & Kaminoff, 1983) and the social identity theories derived from Tajfel and Turner's works. In fact, the paper presents the main results obtained from an empirical investigation which concern to the genesis of urban social identity in a new created neighborhood in Barcelona city appeared as a result of the celebration of the Olympic Games 1992'. Data collected in 1997 and 1999 are analyzed on the basis of social urban identity theory. Name and borders of the district, level of identification with it, differences perceived between the neighborhood and the other ones, and the presence of symbolic urban spaces are the main questions reported by the individuals.