Remnants of the Great Wall of Gorgan

Photos published on May 7, 2023 show remnants of the Great Wall of Gorgan, located in Golestan province in northern Iran, which according to history books is the third longest historic wall in the world after the Great Wall of China and Limes in Germany. The Wall of Gorgan was built during the Sasanian Empire (224 to 651 AD) with a length of at least 200 kilometers. (IRNA photos/Raheleh Hesari)