Castles & palaces
Fort National
Fort in Ille-et-Vilaine, France
Wikipedia names Fort National 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 Fort National. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
Saint-Malo
France · under 1 km
Commune in Ille-et-Vilaine, France
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Towns & cities Dinard
France · 4 km south-west
Commune in Ille-et-Vilaine, France
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Towns & cities
Saint-Lunaire
France · 7 km west
Commune in Ille-et-Vilaine, France
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Towns & cities Saint-Coulomb
France · 9 km east
Commune in Ille-et-Vilaine, France
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Towns & cities
Saint-Briac-sur-Mer
France · 9 km south-west
Commune in Ille-et-Vilaine, France
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Landscapes & nature
Gulf of Saint-Malo
France · 11 km north
Part of the south-western English Channel to the south of Jersey