Where was Welcome Mr. Marshall! filmed?
1953 Spanish film by Luis García Berlanga
Welcome Mr. Marshall! (1953) was filmed in Guadalix de la Sierra, 1 place named in its Italian Wikipedia’s Riprese section, in Spain. 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 Italian Wikipedia's Riprese section
Italian Wikipedia’s Riprese section names 1 place. Each links to the sentence that says so.
