Where was The Impossible Voyage filmed?
1904 film by Georges Méliès
The Impossible Voyage (1904) was filmed in Montreuil, 1 place named in its Wikipedia article's Production section, in France. 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
Montreuil
France
Commune in Seine-Saint-Denis, France
“While most of the film was shot inside Méliès's glass studio, the scene at the foot of the Jungfrau was filmed outdoors, in the garden of Méliès's property in Montreuil, Seine-Saint-Denis.” Wikipedia