Hamadan or Hamedan is the capital city of Hamadan Province.
Ghar-e Ali Sadr (Ali Sadr Cave) is the world's largest water cave which attracts millions of visitors every year. It is located about 100 kilometers north of Hamedan.
Kermanshah is the capital city of Kermanshah Province
Susa was an ancient city of the Elamite, Persian and Parthian empires of Iran.
Shush at the site of ancient Susa is the administrative capital of the Shush County of Iran's Khuzestan province.
Chogha Zanbil is an ancient Elamite complex in the Khuzestan province. It is a UNESCO World Heritage site.