Semiran castle () is a historical

castle A castle is a type of fortification, fortified structure built during the Middle Ages predominantly by the nobility or royalty and by Military order (monastic society), military orders. Scholars usually consider a ''castle'' to be the private ...

located in

Qazvin County Qazvin County () is in Qazvin province, Qazvin province, Iran. Its capital is the city of Qazvin. Demographics Languages and ethnic groups Persian people, Persians, Azeris and Tat people (Iran), Tats are the largest ethnic groups of people. ...

in Qazvin Province, The longevity of this fortress dates back to the

Sasanian Empire The Sasanian Empire (), officially Eranshahr ( , "Empire of the Iranian peoples, Iranians"), was an List of monarchs of Iran, Iranian empire that was founded and ruled by the House of Sasan from 224 to 651. Enduring for over four centuries, th ...

References

{{coord missing, Iran Castles in Iran Sasanian castles Castles of the Nizari Ismaili state