Anuradhapura is the most celebrated of Sri Lanka’s ancient ruined cities from the 4th century BC, it was the capital of Sri Lanka until the start of the 11 th century AD. The ancient city considered sacred to the Buddhist world thus is today surrounded by monasteries covering of over sixteen square miles (40km). There are so many historical values and so many places to visit in this heritage site. From the “Sri Maha Bodhiya” which is considered as the oldest living tree in the world. Ruwanweliseya, Thuparamaya, Samadhi statue, kuttan pokuna, Isurumuniya temple and many more sites. When regarding Isurumuniya temple, is situated near to the Tissa wewa. The speciality of Isuruminiya running to a four carvings. They are the Isurumuniya Lovers, Elephant Pond, and The Royal Family. Most of the ancient rulers produced amazing achievements of engineering, building great tanks to hold the monsoon rains creating irrigation systems that produced tremendous harvests of paddy. Tissa Wewa, an artificial reservoir (water tank) was built by Devanampiya Tissa to extend the water supply system to his Capital city of Anuradhapura.