Where was Venus in Furs filmed?

1969 film, directed by Jesús Franco

Venus in Furs (1969) was filmed in Marbella and Grottaferrata, 2 places named in its Wikipedia article, in Spain, 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