One of the largest monuments, Rang Mahal is located in Surara Mohalla. The foundation of Rang Mahal was laid by Raja Umed Sing (1748-1764). The super structure of Rang Mahal, which is in brick belongs to a later date with its southern portion built around 1860 by Raj Sri Singh. The architecture of Rang Mahal is an amalgam of Mughal and British styles.
This palace was the residence for a branch of the ruling family. Its fort like looks justify its use as royal granary and treasury which is on its western side. Once the palace must have hummed with activity of busy servant and the frolics of the royal blood but now under the aegis of Handicrafts Department of the State Government, most of the rooms of this palace are being used as work-shops for making shoes, chapples and rumals. A number of decorative and colorful wall painting have been removed and taken to National Museum of Delhi. Some of the wall paintings and richly painted doors of the palace can be seen preserved in the Bhuri Singh Museum of Chamba.