Where was Morphine filmed?
2008 film by Aleksei Balabanov
Morphine (2008) was filmed in Uglich and Kalyazin, 2 places named in its Russian Wikipedia’s Производство 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 Производство section
Russian Wikipedia’s Производство section names 2 places. Each links to the sentence that says so.

