Gonbad-e Alavian (or Masjid-e Alavian) is a four-sided interesting 12th century mausoleum belonging to the late Seljuk period. On the exterior, it resembles the Gonbad-e Sorkh of Maragheh. Inside this Dervish Monastery, taken over by the powerful Alavi Family ruling Hamadan for two centuries, is decorated by the same type of gypsum moldings of Heydarieh Mosque of Qazvin. The Alavi Family tombs (two in all) are in the crypt and can be reached by a spiral staircase inside the tower. As regards its architectural merits, the stucco ornamentation of its mirhab with intricate geometric designs and whirling floral motifs on the exterior walls and several inscriptions in Kuffic and Thulth styles, this monument ranks among the most beautiful in its kind in Iran (
http://www.irantravelingcenter.com/hamedan_iran.htm)
