Where was Glass (1958) filmed?

1958 Dutch short documentary film directed by Bert Haanstra

Glass (1958) was filmed in Schiedam and Leerdam, 2 places named in its Polish Wikipedia’s article, in the Netherlands. 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