Where was Dark Eyes filmed?

1987 film by Nikita Mikhalkov

Dark Eyes (1987) was filmed in Rome, Moscow, Saint Petersburg, Kostroma, Montecatini Terme, Peter and Paul Fortress and 2 more places, 8 places named in its Wikipedia article, in Italy, 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.

See them on the map → Wikipedia Source data