Items Deposited Inside the Shaka Nyorai Statue: A Millennium of Devotion Hidden Within

In 1953, during a routine survey of the principal image at Seiryō-ji Temple in Kyoto's Saga district, a back panel on the statue began to come loose. As conservators carefully examined the gap, Northern Song dynasty copper coins tumbled out—the first hint of an extraordinary discovery that would captivate the worlds of art history, religious studies, and medicine alike. The following year, a comprehensive investigation revealed an astonishing collection of items deposited inside the statue's hollow interior: documents, sutras, woodblock prints, personal effects of the monk who commissioned the statue, and most remarkably, a set of silk internal organ models dating back over a thousand years.

These deposited items, collectively designated as a National Treasure of Japan under the title "Zōnai Nōnyūhin Issai" (像内納入品一切, meaning "All Items Deposited Inside the Statue"), represent one of the most significant archaeological finds in Japanese Buddhist art history. Together with the statue itself, they illuminate a pivotal moment in the cultural exchange between Song-dynasty China and Heian-period Japan.

The Shaka Nyorai Statue: Home to a Hidden Treasury

The statue that sheltered these treasures for nearly a millennium is itself a National Treasure. The standing figure of Shaka Nyorai (Śākyamuni Buddha) at Seiryō-ji was carved in 985 CE during the Northern Song dynasty by the brothers Zhang Yanjiao and Zhang Yanxi in Taizhou, China. Commissioned by the Japanese monk Chōnen (938–1016) of Tōdai-ji Temple in Nara, it was intended as a faithful copy of a legendary sandalwood statue said to have been carved in the presence of the living Buddha by King Udayana of India.

Standing approximately 160 centimeters tall and carved from Chinese cherry wood (known as "gishi-ōtō"), the statue is distinguished by its rope-like coiled hair—unlike the typical snail-shell curls seen on Japanese Buddha images—and its robes draped over both shoulders with concentric wave-like folds radiating from the chest. This distinctive style, rooted in Gandharan Buddhist art traditions from Central Asia, became known as the "Seiryō-ji style" and inspired nearly one hundred replica statues across Japan during the Kamakura period and beyond.

Chōnen brought the statue back to Japan in 987 CE, envisioning it as the centerpiece of a grand temple at the foot of Mount Atago in Kyoto. Though political obstacles—particularly opposition from the powerful monks of Enryaku-ji on Mount Hiei—prevented him from realizing his full ambition during his lifetime, his disciple Jōsan eventually enshrined the statue at the site that would become Seiryō-ji Temple, formally established in 1016 CE.

Why These Items Are Designated a National Treasure

The deposited items were designated a National Treasure on June 22, 1955, with additional items added to the designation on September 15, 2017. Their significance spans multiple fields and disciplines.

From a religious and historical perspective, the items provide direct, tangible evidence of the spiritual practices and cross-cultural exchanges between Song China and Heian Japan in the late 10th century. The documents include Chōnen's own handwritten records of his pilgrimage and the circumstances surrounding the statue's creation, making them primary historical sources of the highest order.

From a medical and scientific standpoint, the silk models of internal organs are considered among the oldest known anatomical models in the world. These eleven organ replicas were placed in anatomically approximate positions inside the statue, reflecting knowledge of human anatomy that was remarkably advanced for the era. The models were created at the request of a Buddhist nun named Seigyō from Myōzen-ji Temple in Taizhou, who wished to pray for the healing of a wind-related illness.

From an art-historical standpoint, the woodblock prints found among the deposited items—including a "Scene of Vulture Peak" (Ryōzen Hensōzu) and an image of Maitreya Bodhisattva painted by the renowned Song court painter Gao Wenjin—are exceptionally rare examples of Northern Song printmaking and represent some of the finest surviving works from this period.

A Closer Look at the Deposited Items

The deposited items can be broadly categorized into documents, sutras, prints, personal effects, and ritual objects. Among the most notable are the following:

The "Record of Pilgrimage and Statue Creation" (Zuizō Zōritsu-ki) is a detailed account of Chōnen's journey to Song China and his commissioning of the statue, written by the monk Kantan. It provides invaluable firsthand documentation of 10th-century Sino-Japanese religious exchange. Accompanying this is the "Inventory of Items Deposited with the Five Organs," signed by Chōnen himself and dated to the 18th day of the 8th month of the 2nd year of Yongxi (985 CE).

Among the sutras are a miniature copy of the "Golden Light Sutra" (Konkōmyō Saishōō-kyō) bearing Chōnen's signature, a miniature Lotus Sutra, and a printed edition of the Diamond Sutra with a printing date of the 6th month of Yongxi 2 (985 CE)—making it one of the earliest datable printed texts connected to a specific historical context.

The woodblock prints include the "Scene of Vulture Peak," an image of Maitreya Bodhisattva attributed to the painter Gao Wenijn, images of Mañjuśrī riding a lion and Samantabhadra riding an elephant. These works demonstrate the high level of printmaking technology achieved during the Northern Song dynasty.

Among the personal effects of Chōnen is a document bearing handprints pressed by Chōnen and his fellow monk Gizō, in which they pledged to build a great temple at the foot of Mount Atago—a poignant testament to the spiritual aspirations that drove Chōnen's entire career. Also found was Chōnen's birth record, which scholars believe contains some of the oldest surviving examples of Japanese hiragana script.

The silk organ models—the most famous of all the deposited items—consist of eleven pieces representing the heart, lungs, liver, kidneys, stomach, intestines, and other organs. Made of colored silk, each organ was placed in approximately its correct anatomical position inside the statue's body cavity. After the 1954 discovery, the original silk organs were returned to the interior of the statue, and replica models are now displayed in the temple's Treasure Hall (Reihōkan) and within the Main Hall.

Other items include a mirror engraved with an image of the Water-Moon Avalokiteśvara (Suigetsu Kannon), a bodhi seed rosary, fragments of sal tree leaves (associated with the Buddha's passing), crystal beads, lapis lazuli ear ornaments, 132 Chinese copper coins from various dynasties, bronze bells, silver bracelets, and glass vessels.

Highlights and What Makes This Collection Unmissable

What makes the deposited items at Seiryō-ji truly exceptional is the way they transform our understanding of the Shaka Nyorai statue from a magnificent work of Buddhist art into something approaching a living entity. The concept of "Shōjin no Shaka"—a "living" or "embodied" Shakyamuni—takes on powerful literal meaning when one considers that the statue was deliberately given internal organs, personal relics, sacred texts, and precious objects, as if the sculptors and devotees were breathing life into the image of the Buddha.

The discovery also illuminates the remarkable depth of cultural exchange along the maritime Silk Road in the 10th century. The items span multiple countries and centuries: Japanese documents carried from Nara to China, Chinese sutras and prints produced in Song-dynasty workshops, coins from various Chinese dynasties, crystal and glass objects that may have traveled from even further afield. Together, they form a time capsule of international Buddhist devotion.

For visitors with an interest in medical history, the silk organ models offer an extraordinarily rare opportunity to encounter pre-modern anatomical knowledge in a tangible form. The models reveal that 10th-century practitioners had a sophisticated understanding of organ placement and function, though scholars continue to debate whether the models strictly follow the traditional Chinese theory of "five solid organs and six hollow organs" (gozo-roppu).

The master sculptor Kaikei—one of the most celebrated Buddhist sculptors of the Kamakura period—repaired this statue in 1218 (Kenpō 6), as documented by an ink inscription found on the lotus petal base. This adds yet another layer of historical significance, connecting the statue to one of Japan's greatest artistic traditions.

Visiting Seiryō-ji Temple and Viewing the Deposited Items

Seiryō-ji Temple, affectionately known as "Saga Shakadō" (The Shaka Hall of Saga), is located in the scenic Arashiyama-Sagano area of western Kyoto. The temple grounds are free to enter, while the Main Hall (Hondō) requires a separate admission fee.

The Shaka Nyorai statue itself is normally kept as a hidden Buddha (hibutsu) and is specially revealed on the 8th of every month (from 11:00), as well as during spring (April–May) and autumn (October–November) special exhibition periods. Replica models of the silk internal organs can be viewed inside the Main Hall and in the Treasure Hall.

The Treasure Hall (Reihōkan) opens only during the spring and autumn special exhibition seasons. Its second floor displays many of the actual deposited items, including documents, prints, and reproduction organ models. The first floor houses the temple's other National Treasure, the magnificent Amida Trinity, believed to be modeled on the face of Minamoto no Tōru—the historical figure widely regarded as the model for Hikaru Genji in "The Tale of Genji."

Some individual items from the collection are occasionally lent to major museums across Japan for special exhibitions, so it is worth checking current exhibition schedules at institutions such as the Kyoto National Museum and Nara National Museum.

Surrounding Area and Nearby Attractions

Seiryō-ji Temple is ideally situated for exploring the quieter, more contemplative side of the Arashiyama-Sagano area, away from the busiest tourist spots. Walking westward from the temple's west gate leads to the atmospheric lane known as the Sagano Romantic Trail, passing the thatched-roof cottage of Rakushisha (the residence of the haiku poet Mukai Kyorai), the autumn-leaf-famous Jōjakkō-ji Temple, Nisonin Temple, and the historic Torii-Moto preservation district.

Just a short walk east of Seiryō-ji is Daikaku-ji Temple, a former imperial palace with beautiful lakeside scenery around Ōsawa Pond, one of Japan's oldest artificial garden ponds. To the south, the iconic Arashiyama Bamboo Grove and Tenryū-ji Temple (a UNESCO World Heritage Site) are within easy walking distance.

For those interested in culinary traditions, the area around Seiryō-ji is renowned for Saga Tofu. The historic tofu shop Morika, located right at the temple's eastern gate, has been crafting traditional Kyoto-style tofu for generations and is a beloved local institution.