The introduction of theoretical borrowings from cognitive sciences and environmental planning contributes to public and social thinking in the realm of environment projects. We will study the mental representations of public heritage used and larked out in an urban development worked action in the social mindset of a cultural association. An analytical tool (cognitive quadrant) brings out the main features of spatial perception taken into account in the representations of the agent (representative spatial amareness). Cognitive gaps set in between the association imagination and public action which implements carries out the project. Regording how public heritage is deal with these tensions result in a cognitive discrepancy (dissonance) in the cultural agent that cannot be reduced by public mediation. They weaken the public legitimacy of the project.
