The ex-Information Service of Santa Fe's state police department (SI) functioned as a clandestine detention centre (CDC) between 1976 and 1979 in Rosario city, Santa Fe province, Argentina. It is estimated that in this place had been kidnapped and imprisoned the most important number of people in the region. In 2002, the ex CDC began to be managed by different local human rights organisms, through a commodatum conceded by the provincial government. After its due date in 2012 and a series of architectural interventions, the ex SI was inaugurated as a Space of Memory in 2015. Having as a starting point the anthropological field work that we are developing since 2015 ?including participating observations, interviews and official and press documents?, in this paper we are interested in analyse the different historical events that the ex CDC has been going through, in terms of institutionalization and normalization, as well as its constitution as a place of memory and some of the memorial disputes that has been built around it. Finally, we present a series of reflections in consideration of the actual situation of the ex SI.