Recognized as a UNESCO World Heritage Site, Polonnaruwa showcases a collection of well-preserved ruins and ancient irrigation reservoirs. Polonnaruwa is one of the Cultural Triangles main highlights. As the medieval capital of Sri Lanka from the 11th – 13th century A.D. The city of Polonnaruwa remains one of the best archaeological sites, a testament to the brilliance of its rulers and engineers. The highlight of Polonnaruwa is the Gal Vihara rock sculptures where an unknown 12th century sculptor(s) carved three giant figures of the Buddha as well as a chapel into a granite cliff-face. At the heart of the city lies the Dalada Maluwa (Terrace of the Tooth Relic), popularly known as the Quadrangle. The original home to the Tooth Relic, this makes it the most sacred area of the city.