Where was Burial Ground filmed?

1981 film by Andrea Bianchi

Burial Ground (1981) was filmed in Rome, Frascati, Villa Parisi and Stabilimenti De Paolis, 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