Looking forward with a suspicion this will be very interesting thread!
Hmm, it somehow doesn't associate to me with integration in the nature. Commieblock districts you have is much more plain concrete jungle, than here in Riga, where they are planned with many green spaces in inner yards. Yes, Vilnius has huge intact forest areas inside the city borders, but those are separated, not integrated nature areas (imho, "integrated" means urban+nature together, at the same place).