Abstract This paper argues that unsettled people, far from being “marginal” individuals, played a key role in shaping early modern cities. It does so by going beyond the traditional binary between rooted and unstable people. Specifically, the paper takes the temporary places of residence of this “unsettled” population – notably inns ( garnis in France, osterie in Italy) – as a vantage point to observe social change in early modern cities. The case studies are two cities which shared a growing and highly mobile population in the early modern period: Rome and Marseille. In the first section, the paper focuses on two semi-rural neighborhoods. This is to assess the impact of mobility in shaping demographic, urbanistic, and economic patterns in these areas. Moving from the neighborhood as a whole to the individual buildings which composed it, the second section outlines the biographies of two inns: Rome’s osteria d’Acquataccio and Marseille’s hôtel des Deux mondes . In turn, this is to evaluate changes and continuities over a longer period of time.