Ilam
Located 710 kilometers from Tehran, the city of Ilam is surrounded by heights covered with forests enjoying a mild mountainous climate with very pleasant springs. In the ancient time, Ilam was known as Arboojan. Then, Ilam was known as Hossein Abad till 1929, when it was reconstructed. Hossein Qoli Khan, the most powerful governor of Poshtkooh, constructed numerous different buildings in the city that was his and successors summer resident. Regarding its historical background, in 1946. it was named Ilam by the approval of Iranian Academy. Presently, Ilam is the capital of the province and has developed considerably in recent years. Ilam is a very important city from the tourism point of view due to several natural, historical and cultural monuments.

Mehran
Located in the south of Ilam province, Mehran is at a distance of 791 kilometers from Tehran. Mehran has an arid and semi-arid climate. It is situated on the banks of Konjan Cham River close to the Iraq border. In the past Mehran was known as Mansour Abad but in 1930 it was named Mehran by the approval of Iranian Academy. In recent years Mehran was paid due attention and has developed. This city was occupied and severely damaged during imposed Iraq war and was reconstructed after the war.

Abdanan
Located in the south of Ilam province, Abdanan is 876 kilometers from Tehran enjoying a mild mountainous climate. This area has abundant mines including oil, sulfur and alum. Due to plenty of water resources, there are rich forests, pastures and fertile lands. The vestiges of an ancient civilization are scattered all around the region including the ruins of historical cities like Goorgabran and Krodit. This township holds many promenades worth seeing.