Castles & palaces
St Mawes Castle
Castle in Cornwall built in the 16th century
Wikipedia names St Mawes 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 St Mawes Castle. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
St Mawes
England · under 1 km
Village in Cornwall, United Kingdom
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Landscapes & nature
Carrick Roads
England · under 1 km
Estuary in Cornwall, England, UK
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Landmarks & buildings
St Anthony's Lighthouse
England · 2 km south
Lighthouse in Gerrans, Cornwall, England, UK
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Towns & cities
Falmouth
England · 3 km west
Town and port on the River Fal in Cornwall, England, UK
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Landscapes & nature
River Fal
United Kingdom · 6 km north
River in Cornwall, UK
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Landscapes & nature
Helford River
United Kingdom · 8 km south-west
Inlet of the English Channel (ria) in Cornwall, England, UK