Where was The Girl Who Knew Too Much filmed?

1963 film by Mario Bava

The Girl Who Knew Too Much (1963) was filmed in Rome, Roma Fiumicino Airport and Trinità dei Monti, 3 places named in its Wikipedia article's Production 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