Where was The Miracle of the Bells filmed?
1948 film by Irving Pichel
The Miracle of the Bells (1948) was filmed in Luzerne County and Glen Lyon, 2 places named in its Wikipedia article, 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 article
The Wikipedia article names 2 places. Each links to the sentence that says so.

