قلعة ألموت
In 1090 CE, Hassan-i Sabbah, the leader of the Assassins, a sect of Nizari Ismailis in Iran, chose the Alamut region as his headquarters to campaign, preach and convert new followers. This proved to be a turning point for the destiny of Alamut Valley. The result of over two centuries of Ismailite stronghold, the region witnessed numerous castles throughout, of which at least 20 "castles" dating back to this era have been identified. The most magnificent castle in the Alamut Valley is the Alamut Castle, which is built on top of a high rock reaching 2163 m above sea level near the Gazor Khan Village. The rock is 200 m high and covers an area of ; with its steep slope and deep and dangerous ravine, the rock is practically inaccessible and forms a part of the fort’s structure. Currently, only ruins of the fort and some towers are apparent, and it is only through archaeological excavation that the main portions can be discovered.