Ranikot Fort - Credit: Wikimedia Commons
Ranikot Fort (; also known as Rannikot), also known as the Great Wall of Sindh (), is a 19th-century Talpur-era fort near Sann in Jamshoro District, Sindh, Pakistan.Ranikot Fort Tourism Pakistan Retrieved 14 June 2014 It is believed to be the world's largest fort, with a circumference of approximately . The fort's ramparts have been compared to the Great Wall of China. Read more on Wikipedia
Source: en.wikipedia.org