Landscapes & nature
Lac d'Ilay
Lake in France
Wikipedia names Lac d'Ilay as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Lac d'Ilay. Each title’s page links to the sentence that says so.
Filming locations nearby
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Landscapes & nature Cascade de la Billaude
France · 7 km north-east
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Towns & cities
Morbier
France · 13 km south-east
Commune in Jura, France
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Landmarks & buildings
Gare de Morez
France · 15 km south-east
Railway station in Morez, France
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Towns & cities
Coyron
France · 19 km south-west
Commune in Jura, France
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Towns & cities
Les Rousses
France · 20 km south-east
Commune in Jura, France
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Towns & cities
Mouthe
France · 24 km north-east
Commune in Doubs, France