This dataset provides insights on the urban agglomeration of Geneva. The agglomeration defined by BFS (Federal Statistical Office) slightly vary from the outline of Gran Geneva. You can see the boundaries considered by clicking on "Périmètre d'étude" or by visiting this link https://www.bfs.admin.ch/bfs/fr/home/statistiques/themes-transversaux/city-statistics/city-statistics-transfrontalier/perimetre-etude.html .