What is the oldest and southernmost city in Russia, with 7 miles of city wall?
Citadel, Ancient City and Fortress Buildings of Derbent Derbent Urban Okrug Albanopolis (Caucasus) Bab Al-abwab Bab al-Abwab Caspian Gates of Derbent Derbend Derbent
albanopolis caucasus citadel ancient city and fortress buildings of derbent derbend derbent caspian gates of derbent bab al abwab derbent urban okrug
derbent
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Derbent