The Old City of Hyderabad is a walled city of Hyderabad, Telangana, India, located on the banks of the Musi River built by Qutb Shahi sultan Muhammed Quli Qutb Shah in 1591 AD. There used to be a wall surrounding the Old City, most of which is destroyed. Mubariz Khan, the Mughal governor of Deccan Subah, had fortified the city in 1712 and was completed by Nizam of Hyderabad.