Landmarks & buildings
Ysgol Gyfun Gymraeg Glantaf
School in Cardiff, UK
Wikipedia names Ysgol Gyfun Gymraeg Glantaf 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 Ysgol Gyfun Gymraeg Glantaf. Each title’s page links to the sentence that says so.
Filming locations nearby
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Landmarks & buildings
Broadcasting House
Wales · under 1 km
Building situated in north Cardiff, Wales
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Towns & cities
Gabalfa
Wales · 2 km east
Suburb and community in Cardiff, Wales
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Towns & cities
Pontcanna
Wales · 2 km south-east
Community and suburb in Cardiff, Wales
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Landmarks & buildings
Cardiff City Stadium
Wales · 4 km south-east
Stadium in Wales
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Landmarks & buildings
Welsh National War Memorial
Wales · 4 km south-east
Grade II* listed building in Cardiff. World War I and II memorial in Cardiff, Wales
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Landmarks & buildings
St Fagans National History Museum
Wales · 4 km south-west
Open-air museum in St Fagans, Cardiff, Wales, United Kingdom