Khosrau II
Despite the fact that there is no strong and reliable evidence to show the first time human being settled in this are, most historians believe that Madakto Ancient City as a city in Sassanid era and because of its proximity to Ctesiphon was in fact a summer capital for kings in that era. Historians also believe the city was founded by Khosrau II. The great and impregnable fortress in east of Ctesiphon mountains that Khosrau II built to protect his family when threatened is believed to be in Darreh Shahr as well.