Ancient city of Gorgan (Jorjan)
Old city of Grogan center of ancient state of Gorgan which in historical geography references was called Jorjan is located in south west of Gonbad-e Kavus85 km in north east of Estarabad (Gorgan).City of Jorjan was one of the noteworthy cities during Samanian ZiyaridSeljuq dynasties which after Mongolian invasion in 617 AH was destroyed. This city was built on top of the ruins of a city from ParthianSasanian dynasties by approximate 1200 hectares spacein the matters of urban developmentarchitecture was very advanced.