Where was Malabimba – The Malicious Whore filmed?

1979 film by Andrea Bianchi

Malabimba – The Malicious Whore (1979) was filmed in Balsorano and Piccolomini Castle, 2 places named in its Wikipedia article, in Italy. 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

Places per Wikipedia's article

The Wikipedia article names 2 places. Each links to the sentence that says so.