Where was Three Who Paid filmed?
1923 film by Colin Campbell
Three Who Paid (1923) was filmed in Orange County and Course of San Juan Creek, 2 places 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 2 places. Each links to the sentence that says so.