Where was The China Syndrome filmed?
1979 film by James Bridges
The China Syndrome (1979) was filmed in El Segundo, 1 place named in its Spanish Wikipedia’s Rodaje 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 Spanish Wikipedia's Rodaje section
Spanish Wikipedia’s Rodaje section names 1 place. Each links to the sentence that says so.