We believe Lotman's spatial approach to culture gives us insight into how national identity, as an element of the normative system structuring the semiosphere, can be influenced and modified by elements coming from the boundary. The simultaneity, in which people living a transnational life engage, enables them, as people of the boundary, to act as translators between outside and inside the nation-state limits. From this perspective, we think discourses about national identity and national history produced by people engaging in transnational life uniquely question national identity, for example through their impact on imagined communities.We think the concept of boundary as a place of translation in Lotman’s work is crucial in understanding how people living both in and out of the boundaries of the nation-state redefine national identity. Using the distinction between ways of being and ways of belonging made by transnational anthropologists to define the simultaneity in which transnational people engage, we will study the influence it has on national identity. We will see how post-memory discourses emerging from returnees and the diaspora challenge and change the national identity mainly by reintroducing discourses about national history that have been removed or exiled outside the semiosphere.In other words, we will study the reconstruction and redefinition of the national identity through the post-memory discourses about Chile’s dictatorship (see V. Estay Stange works) coming from transnational people by using semiotics of culture, semiotics of space, and transnational studies. How do discourses coming from the semiosphere’s boundaries challenge national identity?