Where was Nancy Drew and the Hidden Staircase filmed?
2019 film directed by Katt Shea
Nancy Drew and the Hidden Staircase (2019) was filmed in Monroe, 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.