Hamadan or Hamedan is the known province of Iran. The province of Hamedan covers an approximate area of 19,546 km². In the year of 2006, Hamedan province had a populace of about 1.9 million people. Other firstly cities of Hamedan province are: Toyserkan, Nahavand, Malayer, Asad Abad, Bahar, Razan, Kabudrahang. The province is situated in an boosted neighborhood, with the 'Alvand' mountains, running from the north west to the southern west. These are fraction of the Zagros mountain range of Iran.

Hamedan province is one of the majority very old elements of Iran and its civilization. Ruins of this area confirm this information. Today's Hamedan is what is retired of Ecbatana, The Medes' funds ago they shaped a merger with the Persians. The poet Ferdowsi says that Ecbatana was built via King Jamshid. According to historical letters, there was once a castle in this city via the name of Haft Hessar (Seven Walls) which had a thousand rooms and its grandeur comparing that of the Babylon Tower.