Where was Hercules in the Haunted World filmed?

1961 film by Mario Bava

Hercules in the Haunted World (1961) was filmed in Rome, Cinecittà, Castellana Caves and Riserva naturale regionale Tor Caldara, 4 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