Zanjan is the capital of Zanjan Province in Iranian Azerbaijan. It lies 298 km north-west of Tehran on the main highway to Tabriz and Turkey and approximately 125 km from the Caspian Sea. The city is located about 20 kilometers south of the Qaflankuh Mountain Range.
Wikipedia

Iran is an Islamic republic on the Persian (Arabian) Gulf with historical sites dating to the Persian Empire. Extensive marble ruins mark Persepolis, the empire?s capital founded by Darius I in the 6th century B.C. The modern capital, Tehran, is home to opulent Golestan Palace, seat of the Qajar Dynasty (1794?1925), plus modern landmarks such as the 435m-high Milad Tower.
Wikipedia