Where was Passion of Love filmed?

1981 film by Ettore Scola

Passion of Love (1981) was filmed in Venaria Reale, Saint-Denis, Aosta Valley, Montjovet, La Mandria Natural Park and Cly Castle, 5 places named in its Italian Wikipedia’s Produzione section, in Italy. 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

Places per Italian Wikipedia's Produzione section

Italian Wikipedia’s Produzione section names 5 places. Each links to the sentence that says so.