Where was Adam and Eva filmed?
1923 film by Robert G. Vignola
Adam and Eva (1923) was filmed in Stamford, 1 place 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 1 place. Each links to the sentence that says so.
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Towns & cities
Stamford
United States
City in Fairfield County, Connecticut, United States
“In her 16th film, Marion Davies stars as a spendthrift in a film that was mostly shot on location in Stamford, Connecticut.” Wikipedia