Hiyoshi Taisha (日吉大社)

Hiyoshi Taisha sits at the eastern foot of Mount Hiei in Ōtsu, and for over twelve hundred years it has served as the guardian shrine of Enryaku-ji, the monastery complex that dominates the mountain above. The relationship between shrine and temple is physically expressed: the shrine’s torii gates are topped with a distinctive triangular gable that resembles a mountain peak — a form unique to Hiyoshi and said to represent Mount Hiei itself. These “Sannō torii” appear nowhere else in Japan. The shrine’s monkeys, carved and living, serve as divine messengers, and during the Edo period their image was carried throughout Japan as a talisman against plague and misfortune. To understand the spread of Tendai Buddhism across medieval Japan is to understand the influence of this shrine.

Hiyoshi Taisha was established in its current form in the late 8th century, though worship at Mount Hiei predates written records. When Saichō founded Enryaku-ji on the mountain in 788 CE, he incorporated the existing mountain kami into Tendai practice, creating a syncretic system in which the shrine protected the temple. The shrine became the headquarters of the Sannō Shinto tradition, which spread with Tendai temples across Japan. By the medieval period, over 3,800 branch shrines existed. The complex originally contained 108 buildings; most were destroyed during Oda Nobunaga’s razing of Mount Hiei in 1571, but the main sanctuaries were rebuilt in the early Edo period and now serve as Important Cultural Properties.

Ōyamakui no Kami is the primary deity of the East Sanctuary (Higashi Hongu), the mountain god of Hiei who was later syncretized with the Buddhist figure Śākyamuni. The West Sanctuary (Nishi Hongu) enshrines Ōnamuchi no Kami (another name for Ōkuninushi), syncretized with Yakushi Nyorai. In total, the shrine complex venerates over forty kami across multiple sanctuaries, reflecting centuries of theological layering. These deities collectively form the “Sannō Gongen,” the Mountain King Avatar, a concept central to medieval Japanese religious thought. The kami’s domain encompasses protection, healing, and the sanctification of sacred mountains.

The monkey became Hiyoshi’s messenger through a legend of imperial healing. When Emperor Seiwa fell gravely ill in the 9th century, priests from Enryaku-ji performed rituals at Hiyoshi Taisha. During the ceremony, a white monkey appeared and danced before the altar. The emperor recovered, and the monkey was declared a divine messenger. The word for monkey in Japanese, saru (猿), is homophonous with the verb “to leave” or “to dispel” (去る), and Hiyoshi monkeys were believed to drive away evil and illness. During the Edo period, traveling performers carried monkey talismans from Hiyoshi throughout Japan, creating a national cult of protection. The shrine still maintains carved monkey guardians instead of the typical komainu lion-dogs.

The shrine is divided into the East Sanctuary and West Sanctuary, each with its own main hall built in the distinctive Hie-zukuri style — a variation of nagare-zukuri with extended eaves. The Sannō torii gates with their triangular gables mark the entrances and appear repeatedly throughout the grounds. A stone bridge called Ōmiya-bashi, designated Important Cultural Property, spans the ravine leading to the East Sanctuary. The shrine grounds contain over 3,000 maple trees, making it one of Kansai’s premier autumn color sites. Stone lanterns line the approach, many donated by Tendai temples from across Japan. The treasure hall displays masks used in sacred Noh performances and documents the shrine’s medieval influence.

• Sanno Matsuri (April 12-15) — One of Shiga Prefecture’s three great festivals, featuring seven mikoshi (portable shrines) paraded through Ōtsu, concluding with a nighttime boat procession on Lake Biwa. The festival dates to the 9th century and once required attendance by Enryaku-ji monks.
• Momiji Matsuri (November) — A month-long celebration of autumn colors with illuminations, classical music performances, and tea ceremonies held among the turning maples.
• Sannō Gondō-e (January 3) — A New Year ritual in which sacred sake is offered to the kami and then distributed to worshippers for health and longevity throughout the year.

Late November for the maple illuminations, when the 3,000 trees turn the grounds into a corridor of crimson and gold. The evening light-up runs until 8:30 PM and draws significant crowds, but the daytime hours remain relatively peaceful. Early April during Sanno Matsuri offers a glimpse of the shrine’s historical role in regional culture. Weekday mornings in any season provide quiet access to the sanctuaries, particularly the atmospheric stone paths of the East Sanctuary.