This has been known as the Ruhunu Maha Vihara in ancient times. It was built by King Dhatusena (453-474 A.D.). The structures here had been reconstructed by Vihara Maha Devi wife of Bhuwenakabahu IV of Gampola and Parakramabahu V of Dedigama in the 14th century. Two inscriptions of this queen are at the site. In an area girt by a prakara of stone slabs are a Bodhigara, an image house, a dagaba and a sabbath house.