Pura Ulun Danu Bratan is a significant Hindu Balinese temple complex situated on the shores of Lake Bratan in the Bedugul highlands. The temple is dedicated to Dewi Danu, the goddess of water, lakes, and rivers. As part of the subak system, a UNESCO-recognized cultural landscape, it plays a central role in the traditional irrigation and water management network that sustains agriculture across central Bali. The temple's foundation dates back to the 17th century, established by the King of the Mengwi kingdom. It serves as a pivotal site for ceremonies and offerings to ensure the provision of water for the island's rice terraces. The complex consists of several shrines and pagodas (meru), with structures dedicated to other Hindu deities like Shiva and Vishnu, as well as to the Buddha, reflecting the religious syncretism found in Balinese Hinduism. Its strategic location by the lake is integral to its function as a water temple, where rituals are performed to maintain the balance between the human world and the spiritual realm.