The purpose of this research is analysing the migration of skilled workers from Switzerland and from the State of Milan to Turin in the Eighteenth Century. First of all, it will be necessary to define this particular migration phenomenon and to analyse the mobility of the population in relation to the socio-economic conditions of the country of origin, in order to identify the factors that determined the departure and the choice of the destination in a “georeferenciation” perspective.The migration typology will be indentified by means of the following factors: the length of the stay in Turin; its temporary or permanent nature; the relation between migrants and their country of origin.Then, the forms and the degree of immigrant integration in the urban context will be examined by considering the urban area of immigrant settlement, the social network activated or created by the immigrants and the strategies for their access to the labour market. Another useful element for evaluating the immigrant opportunities for integration is the commitment or the capacity of municipal institutions to favour this process.Finally, this research will deal with the relation between immigration and the labour market in order to evaluate how much the labour organisation conditioned the mobility and integration of migrants. As a case study, we will analyse the urban building sites, with special attention to the Filippo Juvarra ones. In this way, this study will be of interest not only for social history, but also from the viewpoint of art history.