Chirag Gala - Credit: Wikimedia Commons
Chirag Gala (), also spelled Çiraq Qala or Çirax Qala, which means lamp castle in Azerbaijani is a ruined ancient fortress overlooking the Caspian coastal plains north of Baku in Azerbaijan. It is located on the top of a mountain, in the Guba Forest. It was constructed by the Sassanid Persians in the 5th century, it was used as a defense for the khanate of Quba in the 18th century. Read more on Wikipedia
Source: en.wikipedia.org