The Polonnaruwa Vatadage is an ancient structure dating back to the Kingdom of Polonnaruwa of Sri Lanka. It is believed to have been built during the reign of Parakramabahu I to hold the Relic of the tooth of the Buddha or during the reign of Nissanka Malla of Polonnaruwa to hold the alms bowl used by the Buddha.

The Gal Vihara, also known as Gal Viharaya and originally as the Uttararama, is a rock temple of the Buddha situated in the ancient city of Polonnaruwa in North Central Province, Sri Lanka. It was fashioned in the 12th century by Parakramabahu I.

It is a complex comprising all ruins of ancient building, starting from the Shiva Devale, and then on to the Thuparamaya a well preserved image house, the Nissanka Latha Mandapaya (Floral Altar), the Hatadage (House of seven relics), and the famous Polonnaruwa Vatadage which is a creation of that has been revered with prominence in Sri Lankan history.

The Parakrama Samudraya, also known as the Parakrama Sea, is considered one of the most valued creations in Sri Lankan history which was built by the great King Parakramabahu. It is a massive tank that once encompassed 5 large reservoirs. Engineers today say that this ingenious design feature was used to relieve the pressure on the main dam and many are baffled by the sheer volume of this feat. Including the remains of sluice gates on the dam, there are plenty of other mysterious design elements and ruins found across the banks; their purposes have still not been speculated. Apart from its engineering brilliance, the reservoir today has become a quintessential part of the region’s ecosystem and thus it supports a wider variety of birds and animals.