Darreh Shahr is located in the central area of the town of the same name (Ilām region) and in the Sasanian period it was one of the capitals of Iran which, starting from the Copper or Chalcolithic Age, reveals traces of urban settlement.
Darreh Shahr, site of the ancient city of Mādākto, was the capital of the Elamites. In different historical periods, for numerous reasons it was destroyed and then rebuilt. It is the largest ancient city in the west of the country and has other names such as: Mādākto, Seymareh and Darreh Shahr and due to the presence of numerous ancient fortifications in its area, it is also known as the city of fortresses of Iran.
In the remaining ruins of this city in the Sassanid era, urban planning works such as: intersections, alleys and passages with a special order that was normal at that time stand out. The coins found belong to Khrosrow III and his successors.
Around and near Darreh Shahr there are areas and numerous ancient places to visit; some are the following: the Bahrām Chubin strait, the Mojin strait, the famous Kul Kani cave, 12 Dakhme, the Anushirvān cave, the Kalam Badreh recreation area, the Cham Namasht bridge (relating to the Sasanian era), the Kenātārike cave , the Gāvmishan bridge, the Sheikh fortress, the Sasanian fortress, some fire temple, the Bābā Seif Al-Din mausoleum, the Imāmzādeh Mahdi Sāleh, the Jāber temple etc.
To Darreh Shahr there is also the archaeological museum of the Ilām region (a museum specializing in the archeology of the west of the country) which exhibits to the visitors beyond 300 ancient and cultural treasures belonging to historical periods of the Achaemenid, Sasanian, Islamic, Safavid, Qajara era which include stucco work, jewelry, coins, terracotta dishes and other items.