Hamedan - همدان

Avicenna (Abu Ali Sina) Ibn Sina mausoleum; Ali Sadr Cave – about 100km north of Hamedan lies this fascinating cave the world's largest water cave , best toured by pedal boat; Baba Tahir Mausleum; Gonbad-e Alavian; Ganjnameh, is an ancient inscription which has been carved in granite, is composed of two sections.