Where was The Republic of ShKID filmed?
1966 Soviet film by Gennadi Poloka
The Republic of ShKID (1966) was filmed in Herzen University, 1 place named in its Russian Wikipedia’s История создания section, in Russia. 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.
Places per Russian Wikipedia's История создания section
Russian Wikipedia’s История создания section names 1 place. Each links to the sentence that says so.