Where was Sword of the Valiant filmed?

1984 film by Stephen Weeks

Sword of the Valiant (1984) was filmed in Ireland, Avignon, Palais des Papes, Cardiff Castle, Castle of Pierrefonds, Caerphilly Castle and 1 more place, 7 places named in its Wikipedia article, in Ireland, France, the United Kingdom. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data