Ismaili.NET - Heritage F.I.E.L.D.

In 1090, Hasan-i Sabbah (1050s –1124), the mysterious leader of the Nizari Ismaʿilis in Persia, obtained control of Alamut Castle, one of the major existing castles in the northern part of Iran, and reinforced it as the headquarters of his activities against the Seljuq government. The Nizari Ismaʿilis gradually became a very influential community within the political and intellectual history of the Islamic world until the fall of Alamut in 1256.