The Great Wall (Rani Kot) of Sindh, Pakistan also recognized as Deware Sindh is the world’s largest fort with a perimeter of about 26 km or 16 miles. It is located in the Kirthar Range about 30 km southwest of Sann, in Jamshoro District. It is approximately 90 km north of Hyderabad. It has an approximate diameter of 6 km. Its walls are on the average 6 meters high and are made of gypsum and lime cut sandstone and total circumference is about 20 km. It was initially constructed for bow and arrow warfare but later on expanded to withstand firearms.
Ranikot is the most supernatural wonder of Sindh. Viewable from five kilometers away its massive rolling walls twist and dip over the hills. Its walls, built with clad sandstone and toughened with 45 bastions along the outer wall, of which 7 are rectangular and the remaining are round. All modified throughout the ages to accommodate the use of gunpowder, this perhaps makes it the largest fort in the world.