Until 1926 Pura Ulun Danu and the town of Batur were situated down in the caldera, at the foot of the Batur fountain of liquid magma. After the spring of gushing lava emitted savagely in 1926, both the town and the sanctuary were decimated aside from the most critical holy place, an 11-layered Meru devoted to Dewi Batari Ulun Danu. The residents moved to the most noteworthy and most established edge of the caldera where they modified their town and the sanctuary.
As a matter of fact, the Pura Ulun Danu is a complex of nine distinct sanctuaries, containing altogether 285 places of worship and structures committed to the divine beings and goddesses of water, farming, blessed springs, workmanship, creates, and so forth.
The accompanying depicts the significant objects of the Pura Ulun Danu:
PURA PENATARAN AGUNG BATUR, the primary sanctuary, has five principle yards. The most overwhelming holy places are the Meru's, a 11-layered one arranged in the inward and most sacrosanct yard, which is devoted to the lake goddess, and three 9-layered ones for the divine forces of mount Batur, mount Abang, and Ida Batara Dalem Waturenggong, the worshipped ruler of the Gelgel tradition who ruled from 1460 to 1550. Another 3-layered Meru is for Ida Ratu Ayu Kentel Gumi who shields the yields from the ailment.
In the northwest corner, one can discover a place of worship with bright statues that is worked in Chinese style and devoted to Ida Ratu Ayu Subandar, the supporter holy person of business and the 'overseer' of the divine beings. The revering of this god dates from the Hindu-Javanese days in which the ruler used to choose a harbor ace, ordinarily a Chinese, who was in charge of the capacity and the security of profitable articles. One of these items, a brilliant belt, can be respected at the bunch Gedung, the building where these profitable articles were put away.
PENATARAN PURA JATI is identified with the source sanctuary on the western shore of the lake. Odalan: Sasih Kedasa (March 19, 2008).PURA TIRTA BUNGKAH is identified with the hot spring somewhere near the lake.
PURA TAMAN SARI and PURA TIRTA MAS MAMPEH are worried about farming.
PURA SAMPIAN WANGI is devoted to such artworks as weaving, sewing, the creation of contributions and stylized cakes.
PURA GUNARALI is the place juvenile young men and young ladies can summon help to build up their common capacities.
PURA PADANG SILA comprises of forty-five stone altars for the minor divine beings and goddesses of Pura Ulun Danu Batur.
PURA TULUK BIYU is another migrated sanctuary. Tuluk Biyu is the old name of Abang, the second most noteworthy mountain in Bali. The sanctuary used to be situated at the southern incline underneath the summit of Mt. Abang.
The sanctuary complex additionally contains a unique gong gede which is just played amid the 11-day odalan (recognizing the establishment of the sanctuary), when it goes with the sacred baris move and the common Rejang move, which is performed by ladies.
The odalan of Pura Ulun Danu Batur happens each Purnama of Sasih Kedasa, the tenth full moon as indicated by the Balinese Çaka moon timetable. This day, as a rule, falls in the long stretch of March however in some cases in April.