Landmarks & buildings
Clogau Gold Mine
Gold mine in north-west Wales
Wikipedia names Clogau Gold Mine 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 Clogau Gold Mine. Each title’s page links to the sentence that says so.
Filming locations nearby
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Landscapes & nature
Rhinog Fawr
Wales · 9 km north
Mountain (720m) in Gwynedd
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Towns & cities
Llanbedr
Wales · 11 km north-west
Village and community in Gwynedd, Wales
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Towns & cities
Harlech
Wales · 14 km north-west
Town, community and seaside resort in Gwynedd, within the historical boundaries of Meirionnydd in northwest Wales
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Towns & cities
Corris
Wales · 15 km south-east
Village and community in Gwynedd, Wales, UK
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Landscapes & nature
River Dee
United Kingdom · 16 km north-east
River in England and Wales
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Landscapes & nature
Snowdonia
Wales · 17 km north-east
Mountainous area in Wales