
Asu Sengi Temple is located in Candi Pos Hamlet, Sengi Village, Shaman District, Magelang Regency. At Coordinates: 7°32′00″S 110°21′00″E or about 25 Km from
Borobudur Temple to the northeast. This temple is a relic of the ancient Mataram kingdom from the Sanjaya dynasty (Mataram Hindu). This temple is located on the western slopes of
Mount Merapi on the banks of the Tlingsing Pabelan River.
The name of the Asu Sengi temple is from the name ASU, which was actually just given by the local community when this temple was first discovered. The real name is actually not known for certain. The name Asu Temple was given because when it was first found there was a statue of Lembu Nandhi whose shape had been damaged and more like Asu [Dog-in Javanese], and Sengi was the name of the village where the temple was located, so the locals called it Asu Sengi Temple.

The body of the temple has decorative reliefs of flora on the four sides of the temple walls and there are reliefs of Kinara-Kinari (birds) as decorative pleats that surround the walls of the temple. In fact, many of these Kinara-Kinari reliefs are engraved on other ancient Mataram temples in
Central Java Province, such as on Plaosan, Ratu Boko, and Ijo temples.
Asu Sengi Temple is a single piece temple with a missing part of the roof standing facing west, in the shape of a square measuring 7.94 meters by 7.94 meters. The height of the foot of the temple is 2.5 meters, the height of the body of the temple is 3.35 meters. The actual height of the temple is not known for certain because part of the roof of the temple has been lost.

Even though the roof of the temple is now gone, it should be suspected that the roof of the temple is in the shape of a dome. This can be seen from the pieces of stone which, when shaped, will resemble a dome. On the inside of the temple there is a statue of a cow or nandhi, there is also a box-shaped well that reaches 3 meters in depth and measures 1.3 meters by 1.3 meters wide. The function of the well is not known with certainty, although on the wall of the well, the traces of the water discharge level are still clearly visible.
From several inscriptions found around the temple, one can identify the inscriptions of Sri Manggala I (number of 874 AD) and Sri Manggala II (number of 876 AD) and the Kurambitan inscription, from the records on these inscriptions it can be estimated that this temple was built around 869 AD (when Rakai Kayuwangi of the Sanjaya dynasty was in power). The inscriptions also state that Asu Sengi Temple is a sacred place for worship, both for ancestral spirits and for the spirits of kings and gods.