Polonnaruwa is the main town of Polonnaruwa District in North Central Province, Sri Lanka. Kaduruwela area is the Polonnaruwa New Town and the other part of Polonnaruwa remains as the royal ancient city of the Kingdom of Polonnaruwa.
The second most ancient of Sri Lanka's kingdoms, Polonnaruwa was first declared the capital city by King Vijayabahu I, who defeated Chola invaders in 1070 to reunite the country once more under a local leader.
The Ancient City of Polonnaruwa has been declared a World Heritage Site.
Currently the new Polonnaruwa is under going a major development project known as the "Awakening of Polonnaruwa" under the concept of President Maithripala Sirisena. It envisions the development of all sectors in Polonnaruwa including roads, electricity, agriculture, education, health and environment will be developed comprehensively.
While Vijayabahu's victory and shifting of kingdoms to the more strategic Polonnaruwa is considered significant, the real "Hero of Polonnaruwa" of the history books is actually Parakramabahu I. It was his reign that is considered the Golden Age of Polonnaruwa. Trade and agriculture flourished under the patronage of the king, who was so adamant that no drop of water falling from the heavens was to be wasted and each was to be used toward the development of the land. Hence, irrigation systems that are far superior to those of the Anuradhapura Age were constructed during Parakramabahu's reign - systems which to this day supply the water necessary for paddy cultivation during the scorching dry season in the east of the country. The greatest of these systems is the Parakrama Samudra or the Sea of Parakrama. It is of such a width that it is impossible to stand upon one shore and view the other side. It also encircles the main city like a ribbon, being both a moat against intruders and the lifeline of the people in times of peace. The Kingdom of Polonnaruwa was completely self-sufficient during King Parakramabahu's reign.
With the exception of his immediate successor, Nissankamalla I, all other monarchs of Polonnaruwa were slightly weak-willed and rather prone to picking fights within their own court. They also went on to form more intimate matrimonial alliances with stronger South Indian kingdoms until these matrimonial links superseded the local royal lineage. This prompted an invasion by the Aryacakravarti dynasty King Kalinga Magha in 1214, who founded the Jaffna kingdom (1215-1624 CE). Local power passed into the hands of a Pandyan dynasty king following the Jaffna kingdom invasion of Lanka in 1284, who moved their capital to Dambadeniya. Polonnaruwa was also called Jananathamangalam during this brief period under the Pandya.