got the collection here. attributing from comments to the photos, not going to google it (the baby is asleep and I don’t have much time):

A hotel in Dombai, Russia

Russian Embassy in Havana, Cuba

Spa resort in Miskhor, Ukraine

Marriage Hall, Bishkek, Kyrgyzstan

Marriage Hall, Tbilisi, Georgia

Ministry of Transporation (now a bank), Tbilisi, Georgia

Opera Theatre, Cheboksary, Russia

Technical University, Minsk, Belarus

Cinema Theatre, Erevan, Armenia

Scientific Library, Kyiv, Ukraine