Where was Short Night of Glass Dolls filmed?

1971 film by Aldo Lado

Short Night of Glass Dolls (1971) was filmed in Rome, Prague, Zagreb, Ljubljana and Stabilimenti De Paolis, 5 places named in its Wikipedia article, in Italy, the Czech Republic, Croatia, Slovenia. 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