The city of Gur (or Ardashir Khurrah) is an ancient site in the city of Firuzabad, Fars province.
It was founded by the first Sasanian king, Ardashir Papakan, in the early third century AD. The plan of this city is circular, with a diameter of two kilometers and four main gates. There were government buildings and courtiers' lodgings.
Gur is the first circular city in Iran and one of the first circular cities in the world.
Ancient Gur is located three kilometers from Firuzabad.
Eight archaeological sites situated in three geographical parts in the southeast of Fars Province: Firuzabad, Bishapur and Sarvestan were recorded in UNESCO World Heritage in 2018 as Sassanid Archaeological Landscape of Fars Region.