Sonakanda Fort - Credit: Wikimedia Commons
Sonakanda Fort is a river fort situated in Narayanganj, Bangladesh, on the eastern bank of Shitalakshya River. Though the time of its establishment could not be ascertained, historians believe that the river fort was built by Mir Jumla II, a Subahdar of Bengal under the Mughal Empire, to defend Dhaka and Narayanganj from pirates. Read more on Wikipedia
Source: en.wikipedia.org