Before 1989, Zelenograd was a de facto closed city in some aspects: it was prohibited to take photos in the central parts of the city, near the plants, teaching and research facilities, and foreigners were not admitted into the city.
Prije 1989., Zelenograd je praktički bio zatvoreni grad u nekim aspektima: bilo je zabranjeno fotografirati u središnjim dijelovima grada, u neposrednoj blizini postrojenja, nastavnih i istraživačkih ustanova.