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- Closed cities — Russian cities and towns in the former Soviet Union &/or present day Russian Federation with travel &/or residency restrictions, and preauthorization requirements to enter &/or remain.
- Some "closed administrative-territorial formations" house 'top secret' science + technology research installations, &/or sensitive military facilities.
Pages in category "Closed cities"
The following 52 pages are in this category, out of 52 total. This list may not reflect recent changes (learn more).