Mōtsū-ji was founded in 850 by Ennin. At the time, the area was a frontier between Yamato Japan and the Emishi of the Tōhoku region of northern Honshū. In the mid-12th century, Fujiwara no Motohira, the second Northern Fujiwara lord, built a temple here called Enryū-ji. There is also a possibility that Motohira's father Fujiwara no Kiyohira built an earlier Enryū-ji on this site before he died in 1128. If so, it is supposed that this original temple was consumed by fire soon after its completion in the war of succession between Motohira and his brother Koretsune. The temple built by Motohira around 1150 would then have been a copy of his father's temple. Motohira's Enryū-ji must have been spectacular by any standards. The main hall contained a monumental statue of Yakushi Nyōrai, the Buddha of Healing, with monumental statues of the Twelve Divine Generals, sculpted by Unkei with crystal eyes; an innovation at that time. The hall itself was brightly painted and decorated with precious wood, gold, silver and jewels. The main hall was surrounded by other buildings including a lecture hall, a circumambulation hall, a two-story main gate, a bell tower and a sutra repository. The temple's name placard was written by Fujiwara no Tadamichi and the ornamental poem slips by Fujiwara no Norinaga. At the height of its glory Mōtsū-ji is said to have had 40 buildings and up to 500 subsidiary chapels for meditation, many of which used rare woods and precious materials in their construction, in the manner of nearby Chūson-ji. Once Enryū-ji was completed Motohira ordered an almost exact copy to be built beside it, Kashō-ji. He did not live to see it completed. His son and heir, Hidehira, accomplished that task. Kashō-ji also contained a monumental statue of Yakushi Nyōrai but the walls were decorated with paintings illustrating the Lotus Sutra. After the downfall of the Northern Fujiwara clan, all of the buildings were destroyed by fires, either natural or in conflicts, and the temple was completely in ruins by 1226.
Current status
The temple was rebuilt during the Edo period; however, the current structures were not located on the original foundations and are not reconstructions of the original buildings. The current temple buildings consist of a Hondō enshrining a Yakushi Nyōrai, and a Jogyō-dō meditation hall. The Oizumi-ga-ike pond and surrounding Pure Land garden is preserved much as it was 800 years ago. The designer of the garden is unknown, but was clearly familiar with the Sakuteiki. The garden consists of a large pond with two islands, one peninsula on the southeast shore, and three on the south shore. On the north shore of the pond are the remains of the original main hall, bell tower and sutra repository. In the original garden, bridges connected this hall with the central island and the great south gate. The shoreline, with its beach, peninsulas and rugged mountain rocks, is thought to represent the seacoast. There are beautiful plantings of cherry trees, irises, lotus, bush clover and maples. Various festivals are held throughout the year. Mōtsū-ji is designated as both a Special Place of Scenic Beauty and a Special National Historic Site.
Annual events
January 20 = The Jogyodo 20th Night Festival and "Ennen no Mai" Dance
May 1–5 = Spring Fujiwara Festival and Ennen no Mai Dance