On the political map of the ancient world, the historical province called Parthia was located in South Turkmenistan. The Great Parthian kingdom was later formed on its basis. This state later consolidated a large geographical area and competed with Ancient Rome. Parthia is known to have had different capital cities at different times. But Nisaya has always been Parthia's «sallanchag» - the city where the state was founded, its spiritual and historical capital.
It was one of the most powerful states that shook the ancient world. It was founded in Parthia, one of the satrapies (provinces) of the Seleucid State in 247 BC by Arsak I, the head of the Parn tribe and his brother Tridatus. Parthia lived for almost 500 years and it fell in 224 AD and disappeared from the scene of history. Over the centuries, information about him has faded. According to this, there are different views in science about the foundation of Parthia, the exact dates of its origin and trial, and the origin of the Arsaki dynasty.