Persian-Caucasian architecture

thumb|right|250px|Derbent is at the foot of the snow-capped Caucasus Mountains, seen here in a photo taken by the MODIS on the orbiting Terra satellite, June 2003

mosque in Yerevan, Armenia

destroyed mosque in Yerevan, Armenia

Naryn-Kala () is an ancient pre-Arab citadel, part of the Derbent fortress, connected to the Caspian Sea by double walls designed to block the so-called Caspian gates to the Persian state. It is included in the UNESCO World Heritage List.

also known as Fire Temple of Tbilisi, is a museum now in Tbilisi Georgia

old structure in Derbent, Russia

Mosque in Ganja, Azerbaijan

mosque in Ordubad, Azerbaijan

fortress in Azerbaijan

former residence of Sardar, the ruler of the Erivan Khanate

mosque in Azerbaijan

mosque in Yerevan, Armenia

Part of Sasanian military strategy and tactic