Hiking along the coast in the Calanques National Park, taking a boat trip to explore the Frioul islands, compiling a herbarium and visiting the natural history museum are some of the small group activities offered to people in financial hardship as part of a study carried out in Marseilles. They meet once a week for ten weeks, accompanied by two group leaders. The RECETAS project, which was launched in the summer of 2023, aims to assess the effectiveness of nature-based social prescriptions to counter social isolation in urban areas. The project running simultaneously in several cities, including Barcelona (Spain), Helsinki (Finland) and Melbourne (Australia).