Isurumuniya is situated near Tisawewa and was built by King Devanampiyatissa to house 500 newly-ordained children of high caste. King Kasyapa I (473-491 AD) renovated this viharaya and named it as “Boupulvan, Kasubgiri Radmaha Vehera”. This name is derived from names of his 2 daughters and his name. There is a viharaya connected to a cave and above is a cliff. A small stupa is built on it. It can be seen that the constructional work of this stupa belong to the present period
Isurumuniya is most famous for the rock carving of a couple of lovers which are housed in a separate building and the impressive rock cliff with its majestic views of the ancient Anuradhapura kingdom overlooking the lake and lower down on both sides of a rocky cleft, in a rock that appears to rise out of a pool, have been carved the figures of elephants and the figure of a horse.