Where was Song of Russia filmed?
1944 film by Gregory Ratoff, László Benedek
Song of Russia (1944) was filmed in Rancho Park Golf Course, 1 place named in its Wikipedia article's Production section, in the United States. 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.
Places per Wikipedia's Production section
Wikipedia’s Production section names 1 place. Each links to the sentence that says so.