Symbolization comes from the power that identifiable social actors have to invest a concrete place with significations. This power is part of the process of urban planning and contributes to the development or reproduction of centrality, by introducing hierarchy between places. In addition, the symbolic realm is characterized by the ability it offers to communicate between the different dimensions of centrality, by transfering social values from one to another and crisscrossing criteria and measurement. Some examples, taken particularly in Mexico City and Los Angeles, show that the symbolizing process is omnipresent but under the dependence of a permanent reconfiguration of significations operated by the actors of urban production.