Qahqaheh Castle
Meshginshahr County, Iran
Qahqaheh Castle is a castle in the mountains 85 kilometres (53 mi) from Meshginshahr in Ardabil Province, Iran. It was built and used as a jail for anti-government politicians during the Safavid dynasty. Ismail II, the third king of the Safavid dynasty, was imprisoned there.
Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).