Being one of the four main Buddhist monasteries in ancient Sri Lanka, Tissamaharama Raja Maha Viharaya has a sacred history of being visited by Lord Buddha along with five-hundred monks that have attained enlightenment. King Kawantissa has founded the monastery after the establishment of Buddhism in Sri Lanka. But contrary to popular belief, it is also debated that King Kawantissa only enlarged the shrine after the initial work was completed by King Mahanaga. It was also hailed as a leading Buddhist educational centre of southern Sri Lanka in the olden days. In the premises of the Viharaya, one can see the blindingly white stupa of Tissamaharama which is one of the largest of its kind in Sri Lanka.