Contour villes et agglomérations de france dans la carte

Bonjour
Comment ajouter le contour villes et agglomérations de france dans la carte ?
Merci d’avance

I’m not totally sure if this is what you are asking about (maybe you can provide some more details?), but if you are looking to add a place to iNaturalist, info is here: https://help.inaturalist.org/en/support/solutions/articles/151000175019-how-to-make-a-place-on-inaturalist