A short history of Ulun Danu Bratan Temple can be known based on archaeological data and historical data contained in a papyrus (Palm-leaf manuscript/Palmyra) chronicle of Mengwi.
According to archaeological data located on the left of the front yard of Ulun Danu Beratan Temple, there is a stone sarcophagus and a stone board which comes from megalithic tradition period, around 500 BC.
Both artifacts are now placed above each babaturan (terrace). It can be expected that the location of Ulun Danu Bratan Temple has been used as a place for conducting rituals since the megalithic era in Bali island
According to chronicle Mengwi, I Gusti Agung Putu as the founder of Mengwi Kingdom founded the temple on the edge of Beratan Lake before he founded The Taman Ayun Temple. Not described in the manuscript when he founded The Ulun Danu Beratan Temple, but only explained about the establishment of Taman Ayun Temple which the ceremony was held on the day Anggara Kliwon Medangsia, Çaka year 1556 (1634 AD).
Based on the description in the manuscript of chronicle Mengwi knew that Ulun Danu Bratan Temple established before the Saka year 1556, by I Gusti Agung Putu. Since the establishment of that temple, The Kingdom of Mengwi became prosperous and I Gusti Agung Putu dubbed by the people "I Gusti Agung Sakti".
Ulun Danu Beratan Temple is located in the village of Candikuning, Baturiti subdistrict, Tabanan regency, the distance traveled from Denpasar city around 56 kilometers to the north along the highway Denpasar - Singaraja.
Ulun Danu Bratan temple is one among the best known Balinese Hindu temples and the most photographed tourist attractions in Bali island.
Ulun Danu Beratan Temple is typically known as Bali temple by the lake or Bali temple on the water as it appears like floating on the water whenever the water level in the Bedugul Lake Beratan is rising.