In 2022 it will be 100 years since the Great Disaster and the expulsion of the Greeks from Asia Minor. Within a few months, 1.5 million Greeks arrived in mainland Greece and the Aegean islands. The arrival of thousands of refugees from Asia Minor in Greece is one of the most important factors in the development and shaping of modern Greek society, both in urban and rural areas. The architectural remains, mainly of a social character, constitute important traces for the formation of national and international collective memory, as a spatial imprint of the Treaty of Lausanne. The seminar, involving architects, geographers and urban planners, will critically and temporally examine the legacy of housing, planned or spontaneous neighbourhoods, social infrastructures, workplaces... built by and for refugees. The aim of the seminar is to critically review what has been done so far in terms of the heritagization of these buildings by the Greek state, their recognition at the international level and the implementation of appropriate tools and measures for the protection of this valuable but particularly fragile heritage, which unfortunately in most cases has already been destroyed.