Rang-Ghar is an Ahom monument located in Sivasagar, Assam, India. It was built in the 18th century during the reign of the Ahom King Swargadeo Siva Singha, and is dedicated to Lord Shiva. The monument is an important example of the Ahom architectural style, which blends traditional Hindu and local Assamese elements. It is known for its intricate carvings, sculptures, and architectural details, and is a popular tourist destination in Assam. During Ahom reign, Rang-Ghar was used as royal sports-pavilion where Ahom kings and nobles were spectators at games like buffalo fights and other sports at Rupahi Pathar - particularly during the Rongali Bihu festival in the Ahom capital of Rangpur.