Alamut
Alamut, (Arabic: آلموت) was the city where Sef Ibn-La'Ahad and his wife settled when he left Masyaf to Mongolia with his father Altaïr Ibn-La'Ahad and his mother Maria Ibn-La'Ahad to assassinate Genghis Khan.
Historically
Alamut (Persian: الموت, transliterated Alamūt) was a mountain fortress located in the South Caspian province of Daylam near the Rudbar region in Iran, approximately 100 kilometres (60 mi) from present-day Tehran, Iran.
Under the leadership of Hasan-i Sabbah, Alamut became the site of intense activity for the Shi’a Nizari Ismaili Muslims (aka the Assassins) between 1090 and 1256 AD. During the medieval period, the castle functioned as the major stronghold of the Nizari Ismaili state. In 1256, Ismaili 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.
Trivia
In Arabic, the name Alamut means “Eagle’s Nest.”
Source:
Assassin's Creed: The Secret Crusade
Alamut information on Wikipedia