Alamut was a fortress located in Iran controlled by the Levantine Assassins through the 11th and 12th centuries. The fortress was destroyed in 1256 by the Mongol Empire, after which the region was abandoned.
Under the leadership of Hassan-i Sabbāh, Alamut became the site of intense activity for the Assassins. During the medieval period, the castle functioned as the major stronghold for the Order.
Circa 1227, Altaïr Ibn-La'Ahad, his son Darim, his former daughter-in-law, and his grandchildren sought refuge in Alamut after Abbas Sofian staged a coup to take over the Assassin Order. Altaïr remained in the fortress for about two decades, during which time he made several discoveries, in addition to creating a number of inventions through the knowledge he gained from the Apple of Eden. Altaïr also discovered the remains of the First Civilization temple, and took six Memory Seals with him, later using five of them as keys necessary to open his library underneath Masyaf.
In 1256, Assassin control of the fortress was lost to the invading Mongols and its famous library holdings were destroyed when the castle's library was condemned to be burned by Ata-Malik Juwayni, a servant of the Mongol court.
- The name Alamut means "Eagle's Nest".