Where was Eyes of Fire filmed?
1983 film
Eyes of Fire (1983) was filmed in Stover, Lake Jacomo and Missouri Town 1855, 3 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 3 places. Each links to the sentence that says so.