Castles & palaces
Deal Castle
16th century coastal artillery fort, located in Deal, Kent, England, UK
Wikipedia names Deal Castle 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 Deal Castle. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
Deal
England · under 1 km
Town in Kent, England, UK
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Streets & squares
Deal Pier
United Kingdom · under 1 km
Leisure pier in Kent, England
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Towns & cities
Walmer
England · 2 km south
Town in the district of Dover in Kent, England
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Towns & cities
Kingsdown
England · 4 km south
Village in Dover, Kent, England, UK
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Towns & cities
Sandwich
England · 8 km north-west
Town in Kent, England
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Landmarks & buildings
Discovery Park
England · 9 km north-west
Science and technology park in Sandwich, Kent, England