Where was Lady J filmed?

2018 film directed by Emmanuel Mouret

Lady J (2018) was filmed in Pontoise, Marly-le-Roi, Ennery, Saint-Symphorien, Val-de-Grâce, Pontoise Cathedral and 2 more places, 8 places named in its Wikipedia article, in France. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data