Where was Massacre in Rome filmed?

1973 film by George P. Cosmatos

Massacre in Rome (1973) was filmed in Rome and Cinecittà, 2 places named in its Romanian Wikipedia’s Producție section, 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