Castles & palaces
Tretower Court
Grade I listed fortified manor house in Cwmdu, Powys, Wales
Wikipedia names Tretower Court 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 Tretower Court. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
Tretower
Wales · under 1 km
Hamlet in the county of Powys, Wales
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Towns & cities
Llangynidr
Wales · 3 km south-west
Village in the county of Powys, Wales
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Towns & cities
Crickhowell
Wales · 4 km south-east
Town and community in Powys, Wales
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Landscapes & nature
Llangorse Lake
Wales · 8 km north-west
Lake near Brecon, Powys, Wales, UK
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Landscapes & nature
Black Mountains
Wales · 8 km north
Mountain range in Wales
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Landscapes & nature
Monmouthshire and Brecon Canal
United Kingdom · 9 km south-east
Network of canals in South Wales