Gunung Gangsir Temple is located in Gunung Gangsir Village, Beji Subdistrict, about 18 kilometers from Pasuruan. The name of the temple, in fact, is the Temple of Keboncandi. But, because the temple is situated in Gunung Gangsir Village, folks call it Gunung Gangsir Temple.
Information on the temple is open. It is said that the temple was built when the reign of King Airlangga was around the 11th century.
Although the temple is believed to have been constructed earlier than the era of the Singasari administration, Gunung Gangsir Temple was built using bricks instead of andesite stones.
The purpose of the temple remains uncertain, as local people have their own version of it.
According to local legend, the temple was built in honor of Nyi Sri Gati, alias Mbok Randa Derma (a benevolent widow), for her noble deeds to develop local agriculture. Nyi Sri Gati is a legendary character who holds a position in the heart of the local people.
Gunung Gangsir Temple has never been completely renovated. While much of the architecture remains untouched, some areas of the structure have fallen into ruins.
It is said that the temple was seriously damaged during the Japanese invasion. Most temple ornaments were taken by Japanese soldiers to fund the war.
After the war was over, the local people, with no prior knowledge of how to rearrange the temple, did as much as they could to repair the temple. As a consequence, some of the bricks and ornaments appear to be out of place.