Where was The Noah's Ark Principle filmed?

1984 film by Roland Emmerich

The Noah's Ark Principle (1984) was filmed in Sindelfingen, Böblingen, Maihingen and Maichingen, 4 places named in its Wikipedia article, in Germany. 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.

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