Where was Dream City filmed?
1973 film by Johannes Schaaf
Dream City (1973) was filmed in Český Krumlov, Timna valley and Přísečnice, 3 places named in its Wikipedia article, in Israel, the Czech Republic. 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 article
The Wikipedia article names 3 places. Each links to the sentence that says so.

