Jakkoin Main Hall

Jakkō-in Hondō: An Elegant Meiji-Era Main Hall in the Maple-Cloaked Mountains of Inuyama

Hidden in the forested foothills of Mt. Tsugao in Inuyama, Aichi Prefecture, the Main Hall (hondō) of Jakkō-in Temple stands as a graceful expression of late nineteenth-century Buddhist architecture. Reached by a winding mountain path lined with stone Buddhist images and shaded by some 1,000 maple trees, the hall offers visitors a rare combination of architectural refinement, deep spiritual heritage, and seasonal natural beauty. Designated a Registered Tangible Cultural Property of Japan in 2005, it is the principal worship hall of one of Owari Province's oldest temples and remains a working centre of pilgrimage and prayer to this day.

A Mountain Temple Born from Imperial Devotion

According to temple tradition, Jakkō-in was founded in the year 654 by the priest Dōshō of Gangō-ji Temple in Nara, at the imperial wish of Emperor Kōtoku. The full name of the temple — Tsugaozan Hachiyō Rendai-ji Jakkō-in — evokes the eight-petalled lotus throne of Buddhist iconography. From its earliest days, the mountain has been venerated as a sacred site dedicated to Senju Kannon, the Thousand-Armed Bodhisattva of Compassion, whose image legend connects to the spirit of the hero Yamato Takeru appearing on this hillside.

At its medieval height, the temple is said to have possessed eighteen sub-temples and lands yielding 500 koku of rice. Its standing was renewed in 1565 when the warlord Oda Nobunaga, accompanied by his retainer Shibata Katsuie, made a pilgrimage here from his stronghold at Kiyosu Castle. Recognising Jakkō-in as a guardian temple defending the unlucky northeastern direction (kimon) of his castle, Nobunaga endowed it with fifty koku of land and fifty chōbu of mountain forest, securing its survival through the turbulent Sengoku and Edo periods.

The Main Hall: A Meiji Reconstruction in Traditional Form

The current Hondō is not the original temple structure but a careful rebuilding completed in 1879, the twelfth year of the Meiji era, during the tenure of the temple's twelfth head priest. Despite being a relatively recent construction by Japanese standards, the hall was deliberately built in the time-honoured forms of classical Buddhist architecture, restoring the dignified appearance of a major mountain temple's main hall after centuries of natural wear.

Architecturally, the building measures five bays across and five bays deep, with a hipped (yosemune) tiled roof and a single-bay porch (kōhai) projecting at the front. A wooden veranda (kirimebuchi-en) runs around all four sides, and a covered corridor links the hall to the neighbouring Zuigu-dō. Round wooden pillars carry projecting bracket complexes (de-gumi) of restrained complexity, and the structure as a whole avoids ostentation, instead achieving its dignity through proportion and craftsmanship.

Inside, the front two bays form an outer sanctuary (gejin) left open to worshippers, crowned by a finely worked small-grid coffered ceiling (kogumi-gōtenjō). Beyond it lies the inner sanctuary (naijin), where a Zen-style altar platform (shumidan) supports the miniature shrine (zushi) housing the principal image.

Why It Was Designated a Cultural Property

Jakkō-in Hondō was registered as a National Tangible Cultural Property on July 12, 2005, under Japan's system for protecting buildings of significant historical, artistic, or architectural value. Several qualities supported its designation.

First, the hall represents an authentic example of full-scale Buddhist temple architecture from the early Meiji era — a transitional period in which traditional carpentry techniques continued to be practised even as Japan was rapidly modernising. The use of round columns, de-gumi bracket sets, a kogumi-gōtenjō ceiling, and a Zen-style shumidan reflects an unbroken transmission of pre-modern Japanese architectural knowledge.

Second, the structure is notable for its restraint. Rather than indulging in ornamental excess, the carpenters who rebuilt the hall pursued a quiet, classical idiom that complements the temple's mountain setting and its long Shingon Buddhist tradition. The Cultural Affairs Agency describes it as "a full-scale main hall building executed in a traditional form with restrained ornamentation."

Third, the hall does not stand alone. Together with the Zuigu-dō (Hall of Daizuigu Bodhisattva, ca. 1805), the Benten-dō (Benten Hall, ca. 1820), and the Sanmon gate (1836, by the Owari domain master carpenter Takenaka Senshōbin), it forms an architectural ensemble in which different historical phases of the temple are preserved side by side. All four buildings were registered on the same day in 2005.

Highlights and Atmosphere

For the visitor, the Hondō is best appreciated as the climax of a longer pilgrimage experience. The approach begins at the foot of the mountain near the Kiso River, passes through the Sanmon gate, and rises along stone steps where stone images of the Eighty-Eight Sacred Sites of Shikoku stand paired with figures of Kūkai (Kōbō Daishi), the founder of Shingon Buddhism.

The honzon enshrined in the inner sanctuary is the Thousand-Armed Kannon, a hidden image (hibutsu) revealed to the public only once every sixty years, in the year of the Wood Rat (kinoene). Recent openings took place in 1926 and 1984, with an exceptional opening in 2010 to commemorate the completion of the "Heisei Great Repair." A substitute "maedachi" image of the bodhisattva, carved during the Nanboku-chō period (14th century), stands before the closed shrine and may be venerated at any time.

Just beside the Hondō rises a viewing platform known as the Fude Kōbō Daishi Observation Point. From here, on a clear day, visitors can take in a panorama that extends from Inuyama Castle and Komaki Castle to Gifu Castle on Mt. Kinka, and as far as Mt. Ibuki, the Yōrō and Suzuka mountains, and even the skyscrapers of Nagoya — a view unique among temple precincts in the region.

The Maple Temple Through the Seasons

Jakkō-in is widely known by the affectionate name Momiji-dera, "the Maple Temple," and is celebrated as one of the finest autumn-foliage destinations in the former Owari province. Approximately 1,000 maple trees grow within the precincts, many of them old specimens with finely cut leaves that turn vivid scarlet and gold in late autumn. The temperature swings of the Kiso River valley produce particularly intense colours, and an annual Momiji Matsuri (Maple Festival) is held from the second Saturday of November through the second Sunday of December.

Spring brings Yoshino and mountain cherries, followed by mountain azaleas, fringed iris (shaga), hydrangeas, and crepe myrtle. The fresh young leaves of mid-April through early May, increasingly known as "blue maples" (ao-momiji), have come to rival the autumn colours in popularity, drawing visitors who prefer quieter, greener pilgrimages.

Visitor Information

Jakkō-in lies in the northern part of Inuyama City, within the Hida-Kisogawa Quasi-National Park. The most convenient route is from Inuyama Station on the Meitetsu Inuyama, Hiromi, and Komaki lines: from the east exit, board the Inuyama City Community Bus on the Kurisu-Tomioka Line and alight at the "Jakkōin-guchi" stop, a ride of about fifteen minutes. From the bus stop, a path of stone steps and a long sloped approach leads up the mountainside.

Because the climb to the Hondō involves a notable change in elevation, a slope car (a cable-driven inclined railway) has operated since June 2010 between the lower precinct office and the upper hall area. Visitors with limited mobility, or those simply wishing to save energy for sightseeing, are warmly encouraged to make use of it; a one-way donation of 200 yen or more is requested. Parking near the temple is limited, and public transport is recommended whenever possible.

The grounds are open during daylight hours throughout the year, and admission is free. Monthly meditation classes, sutra-copying sessions, Buddhist-image drawing classes, and Shingon devotional chant (eika) lessons are offered at modest fees, providing a deeper introduction to Shingon practice for those with the time to attend.

Around Jakkō-in: Inuyama and the Kiso River

Jakkō-in pairs naturally with several of central Japan's most rewarding cultural sights. Inuyama Castle, one of only twelve original castle keeps remaining in Japan and a designated National Treasure, stands less than ten kilometres downstream and is reached easily by train. Its old castle town, lined with sake breweries and traditional sweet shops, is a popular destination in its own right.

Closer at hand, the riverside walking path leads to Momotarō Shrine, dedicated to the legendary peach-boy hero, and to the Kiso River itself, where the ancient art of cormorant fishing (ukai) has been practised for over 1,300 years and is performed nightly in summer. Mt. Tsugao, rising to 273 metres directly behind the temple, offers a thirty-minute walking trail to its summit, with rest pavilions and further panoramic views. Slightly further afield, the open-air architectural museum Meiji-mura preserves more than sixty buildings from the same era as the Hondō and is well worth a half-day visit for those interested in Meiji-period craftsmanship.