Where was Watch on the Rhine filmed?

1943 film by Hal Mohr, Herman Shumlin

Watch on the Rhine (1943) was filmed in Los Angeles, Pasadena, Burbank and San Marino, 4 places named in its Portuguese Wikipedia’s Produção 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.

See them on the map → Wikipedia Source data