This article explores the application of the concept of the frontier to the study of the spatial dynamics of cultural memory. The author traces the evolution of spatial methodology within memory studies, identifying three successive stages: spatial, network-based, and flow-oriented. The spatial stage is marked by the homogeneity of collective memory; the network stage reveals the discreteness and heterogeneity of mnemonic configurations; and the flow stage enables an analysis of the interweaving of memorial practices linked to diverse cultural contexts. The conceptual shift from memory as a static condition to memory as a nonlinear, multilayered process necessitates a rethinking of the frontier category. This shift entails a rejection of geographic determinism, allowing border zones to be understood not only as specific territories but also as symbolic constructs—images of cultural memory that become sites of both encounter and confrontation between competing strategies of relating to the past. Within a flow-oriented methodological framework, the frontier is characterized by mobility and relationality, as its contours are defined by the claims of particular collective subjects to specific mnemonic representations. This property becomes especially salient in the context of a contemporary mobile society, marked by the interpenetration of various communities, such as migrants and indigenous populations. © This work is licensed under a Creative Commons “Attribution” 4.0 International License