Imamzadeh Jafar is a historical mausoleum in Borujerd, western Iran. The tomb contains the remains of Abulqasim Jafar ibn al-Husayn, grandson of the Shiah Imam Ali ibn Hussayn. Built in the 11th century AD, Imamzadeh Jafar is one of the few examples of the architecture of the Seljuq and Ilkhanid eras in Iran. A very similar mausoleum is the Tomb of Daniel in Susa, south western Iran. The building is octagonal with a high dome in the center. The height of the conic-shaped dome is 25 meters from the base.