Nyohoji Temple Buddha Hall

Nyohoji Butsuden: A Hidden Zen Treasure in the Hills of Iyo

High on the wooded slopes of Mount Tomisu in the city of Ozu, Ehime, stands one of Japan's most quietly remarkable pieces of architecture. The Buddha Hall of Nyohoji Temple — Nyohoji Butsuden — has watched over the lush green basin of the Hiji River for more than three and a half centuries. Built in 1670 and miraculously spared from the fires that consumed every other building in the temple complex, it is the only structure in Japan that combines a Zen Buddha hall and a meditation hall into a single, unified space. For travelers who feel that the soul of Japan is best discovered away from the crowded famous sites, Nyohoji offers a rare encounter with the spirit of early Edo-period Zen.

An Encounter with the Rinzai Zen Tradition

Nyohoji belongs to the Myoshin-ji branch of Rinzai Zen Buddhism. The temple's mountain name is Tomisuzan, and its principal image is a seated figure of Shakyamuni Buddha, the historical founder of Buddhism. Although a temple of the same name had existed on this site since the Muromachi period, founded long ago by the Utsunomiya clan who once ruled this region, that earlier institution had fallen into ruin. The Nyohoji that visitors see today is the result of a powerful spiritual partnership formed in the late seventeenth century.

In 1669, Kato Yasuoki, the second lord of the Ozu Domain, invited the celebrated Zen master Bankei Yotaku (1622–1693) to establish a new monastery on the slopes of Mount Tomisu. Bankei was one of the most influential and unconventional Zen teachers of the Edo period, famous throughout Japan for his "Unborn Mind" teaching, which he expressed in plain-spoken sermons that could be understood by farmers and lords alike. Nyohoji became one of his three great training halls, alongside Ryumon-ji in Harima Province and Korin-ji in Edo. From its founding, the temple served as the family mortuary temple of the Kato lords of Ozu, and seven generations of domain lords are interred within its precincts.

A Building Unlike Any Other

The Buddha Hall was completed in 1670, just one year after the temple's refounding. At first glance, it appears to be a fairly modest single-story wooden hall, measuring five bays across the front and four bays in depth, with a graceful hip-and-gable roof of traditional clay tiles. A small projecting porch, called a kohai, shelters the main entrance, and at the rear of the building a curving Chinese-style gable known as a karahafu marks a small protruding annex. To the casual visitor it looks like any number of fine old Zen halls.

The astonishing innovation lies inside. In nearly all Japanese Zen monasteries, the Buddha hall and the meditation hall are kept as two completely separate buildings, each with its own clearly defined function. At Nyohoji, the architects of 1670 chose instead to combine the two. The floor is laid not with wooden boards but with thick ceramic tiles called sen, arranged in a striking diagonal quarter-pattern. In the center of this earthen-tile floor rises a Buddhist altar bearing the Shakyamuni image, while along both side walls run rows of one-bay-wide tatami platforms, called tan, where the monks would sit in zazen meditation, eat their meals, and sleep at night. Built into these platforms are sliding compartments known as kanki, designed to store the monks' bedding rolls. Above all of this, ninety-six painted dragons coil across the coffered ceiling, watching over the practice below. There is nothing else quite like it anywhere in Japan.

Why It Was Designated an Important Cultural Property

On August 10, 1992, the Japanese government designated Nyohoji Butsuden as a National Important Cultural Property. The reasons given by the Agency for Cultural Affairs reflect both the building's exceptional state of preservation and its rare architectural form. While most early Edo-period temple buildings have been altered, partially rebuilt, or replaced after fires, the Buddha Hall at Nyohoji escaped the multiple fires that destroyed every other building in the temple compound. Its original 1670 framework, joinery, and roof structure remain largely as they were when first completed.

Beyond its preservation, the hall is admired for the elegance of its detailing and for the structural ingenuity that allowed a single space to function both as a Buddha hall and as a Zen training hall. Its great horizontal beams, called daibari, span the interior with quiet authority, creating an open volume of remarkable serenity. As an architectural document of how early modern Japanese Zen monastic life was organized, the building has no equal — and it has come to be regarded as one of the defining surviving examples of Edo-period Zen Buddha hall architecture.

What Recent Restoration Work Revealed

Between 2010 and 2014, the Buddha Hall underwent a major dismantling and restoration project lasting roughly four years. It was the first comprehensive repair the building had received in its more than three hundred and forty year history. The work returned the hall to its original 1670 appearance and produced a series of remarkable discoveries.

Carpenters working on the side platforms found ink inscriptions on the inner panels of the tan compartments, written by the craftsmen of 1670, that referred to the temple as a "restored monastery" and called the building the "Hall of Shakyamuni." These notes confirmed how the original artisans understood the religious purpose of the new hall. Other inscriptions revealed that the carved decorations of the front porch and the elaborate frog-leg struts had been produced by sculptors from Himeji, while the demon-faced ridge tiles were the work of tile makers based here in Ozu. The roof of the rear annex, which had been re-tiled at some point in the past, was found to have been originally finished in kokera-buki, layers of paper-thin wooden shingles. Today it has been faithfully restored to that earlier appearance.

Highlights for the Visitor

Nyohoji rewards unhurried exploration. The temple grounds spread across about ten thousand square meters of forested mountainside, and a leisurely walk through the precincts takes thirty to forty minutes.

At the heart of the visit is, of course, the Buddha Hall itself. From May through October, the temple offers seated Zen meditation experiences inside the hall on the first Saturday of the month, allowing visitors to sit on the very tatami platforms used by monks for centuries. The temple also welcomes pre-arranged group experiences that may include zazen, ritual sweeping, tea, and a guided tour of the lord's burial ground; loaner robes are available without charge. Among other treasures within the Buddha Hall are the seated image of the founding abbot Bankei, made in 1697 with his own ashes mixed into the clay of the head and adorned with strands of his actual hair, and a corresponding image of the founding patron Kato Yasuoki.

Elsewhere in the precincts visitors will find the Kannon-do hall, completed in 1677 and still preserving its original form, the Okushiken hermitage where Bankei retreated for the most rigorous training, and a beautiful pond garden behind the abbot's quarters featuring a tranquil "Pond of the Unborn." In front of the main entrance grow ancient camellia trees designated as Prefectural Natural Monuments, including a "Five-color Scattering Camellia" estimated to be more than three hundred years old. The autumn foliage of late November and early December is celebrated throughout western Japan, drawing visitors from far and wide.

Things to See and Do Nearby

Ozu is widely known as the "Little Kyoto of Iyo," and the area around Nyohoji offers some of the most rewarding cultural sightseeing in Shikoku. Ozu Castle, painstakingly reconstructed in 2004 as one of the largest authentic wooden donjon reconstructions in Japan, stands at the center of the old castle town and is visible from many points along the Hiji River. Garyu Sanso, a refined sukiya-style villa designated as a National Place of Scenic Beauty, perches above a deep emerald pool of the Hiji and is considered one of the masterpieces of late Meiji domestic architecture. The historic streets of Ozu's Hijinami district preserve merchant houses, white-walled storehouses, and cobblestone lanes that evoke the prosperity of the castle town in earlier centuries. Cormorant fishing on the Hiji River, performed during the warm months, is among the oldest such traditions in the country.