Liège, early 1960s. As in other European cities, the real estate boom has just begun. As good modernists, the mayor and a bench of private developers thought to renovate the housing stock by replacing the old urban fabric with a new housing type : the apartment building. In a 15-years time, most of the 19th century houses along the quays and the boulevards have been substituted by 12-storey high modernist constructions. This transformation radically changed the skyline and the image of the city. After 50 years, these buildings have come to the end of a life cycle. With the rising cost of energy, the change in society and the evolution of norms and standards, these modern ‘icons’ are becoming outdated. There is a growing need to reconsider this typology and to think its possible future. The summer school will explore how architectural interventions could revive this important housing stock.