Located on the northeastern corner of the garden is the royal tower or Shahi Burj. The dome of the tower was destroyed during the War of 1857. The tower is said to be the emperor's private working area, where the emperor also organized private gatherings. The roof of the tower is said to be one of the hallmarks of Shah Jahan's architectural design. The tower was octagonal in shape and had three storeys. The Stream of Paradise or Nahr-i-Bhisht flowed from here along the Royal Terrace through the Hammam, Diwan-i-Khas, Khas Mahal, and the Rang Mahal. The lower storey of the tower contained a water tank from which water was released to flow into the gardens and palaces. The pavilion adjoining the tower on the south is said to have been built during Aurangzeb's reign.
