ReROOT is a Horizon2020 research project consisting of six universities, two research institutes, and two NGOS running from 2021-2025. The project uses ethnographic methods to study the challenges and opportunities migrants encounter on arrival in specific arrival situations in eight countries (Belgium, Turkey, France, the Netherlands, Germany, Hungary, Greece, UK). ReROOT focuses on ‘arrival infrastructure’ - how newcomers source shelter, support and resources upon arrival in a place. From informal social connections to formal support organisations; from public spaces to libraries, shops or health centres, ‘arrival infrastructure’ shapes migrants’ pathways after arrival and affects how quickly and successfully they can achieve their goals, whether to settle or move on.