Over the years, an impressive number of research programmes have been conducted on major archaeological sites in Québec City. These programmes have been implemented by large research teams affi liated to several institutions. Both individually and collectively, these initiatives have generated considerable new knowledge on the early modern period in the New World. They have also created a research context which is unique in Canada, not only because of the number of individuals involved but also the scale and quality of the results. This introduction gives a brief overview of these programmes, whose fi ndings are generally published only in French.