Mii-dera Temple

Overview

Mii-dera (三井寺) is a Buddhist temple in Ōtsu, Shiga Prefecture, at the foot of Mount Hiei. Its formal name is Onjō-ji (園城寺), and it sits a short distance from Kyoto and from Lake Biwa, Japan's largest lake. The temple grounds contain forty named buildings.

Mii-dera is the head temple of the Jimon sect of Tendai Buddhism, and a sister temple to Enryaku-ji, which stands at the top of Mount Hiei. It is one of the four largest temples in Japan. It is also temple 14 of the Saigoku Kannon Pilgrimage, a circuit of thirty-three temples dedicated to Kannon, the bodhisattva of compassion.

History

The temple was founded in 686, during the Asuka period (538–710), in the first year of the Shuchō era (朱鳥). The site lies in what is now the city of Ōtsu.

Mii-dera's position at the foot of Mount Hiei placed it in direct rivalry with Enryaku-ji above it. That rivalry twice turned into open warfare. The Siege of Mount Hiei and the Battle of Omi both involved the temple, and the Battle of Omi is recorded as having participants drawn from among the temple's associated sites.

What Stands There Today

The complex is made up of forty named buildings. Among them are the Golden Hall (Kondō, 金堂), the central worship hall of the temple; the Shinra Zenjin Hall (新羅善神堂); the Kōjō-in Kyakuden (光浄院客殿) and the Kangaku-in Kyakuden (勧学院客殿), both guest halls; and the Bimyō-ji (微妙寺), Gonshō-ji (近松寺), Suikan-ji (水観寺) and Enman-in (円満院) temples within the grounds.

The temple also holds the Mio Shrine (三尾神社) and the Nagara Shrine (長等神社). It owns a Buddhist image known as the Yellow Fudō (黄不動, ki-fudō), a depiction of Fudō Myōō rendered in yellow.

Mii-dera belongs to several pilgrimage circuits: the Saigoku Kannon Pilgrimage, the Kosei Saigoku Sanjūsankasho (近江西国三十三箇所), the Lake Biwa 108 Pilgrimage Sites, and the Shinbutsu Reijō Junpai no Michi (神仏霊場巡拝の道), a route linking Shinto shrines and Buddhist temples.

The Name in Japanese

The temple carries two names, and both are in daily use.

The formal name is 園城寺, read おんじょうじ in kana and written Onjō-ji in romaji. The reading does not follow the sounds of the individual characters, so it has to be learned as a set.

• 園 — read on here; it means "garden" or "park."
• 城 — read jō here; it means "castle" or "fortress."
• 寺 — read ji here; it means "temple." This character appears at the end of temple names across Japan.

The everyday name is 三井寺, read みいでら and written Mii-dera. Here the reading is closer to the characters, with 寺 taking its native Japanese reading dera rather than the Sino-Japanese ji.

• 三 — read mi; it means "three."
• 井 — read i; it means "well."
• 寺 — read dera; "temple."

So the common name means "Three Wells Temple." The mountain name attached to the temple is Nagara-san (長等山), and the full formal designation is Nagara-san Onjō-ji (長等山園城寺).

For learners, the two names are a useful illustration of a common pattern in Japanese temple names: a formal Sino-Japanese reading used in documents and signage, and a shorter native reading used in speech. The same temple can be Onjō-ji on a plaque and Mii-dera in conversation.

Visiting and Context

Mii-dera stands in Ōtsu, Shiga Prefecture, at coordinates roughly 35.01° north, 135.85° east. It is close to both Kyoto and Lake Biwa, which makes it reachable as a day trip from central Kyoto.

As temple 14 of the Saigoku Kannon Pilgrimage, it is one of the stops on a route that has drawn pilgrims for centuries. The temple's membership in the Kosei Saigoku Sanjūsankasho, the Lake Biwa 108 Pilgrimage Sites, and the Shinbutsu Reijō Junpai no Michi places it within several overlapping devotional networks, some focused on Kannon and some linking Buddhist temples with Shinto shrines.

The temple's relationship with Enryaku-ji is part of what defines it. The two sit on the same mountain, one at the summit and one at the base, and their history of conflict — including the Siege of Mount Hiei and the Battle of Omi — is inseparable from the temple's identity. For a visitor, the geography makes that rivalry legible: the distance between the two temples is short, and the tension between them shaped centuries of Japanese religious and military history.