Itsukushima Shrine, rising from the waters of the Seto Inland Sea, safeguards an extraordinary collection of treasures passed down for over 900 years. The shrine holds approximately 260 items designated as National Treasures or Important Cultural Properties—most of them offered by the powerful Taira clan (also known as the Heike) and successive rulers as expressions of faith and prayers for prosperity.
This collection is far more than a gathering of beautiful artifacts. These treasures represent the finest surviving examples of Heian-period aristocratic culture, Japanese decorated sutras, and samurai armor craftsmanship. Together, they form a cultural heritage of global significance found nowhere else in the world.
Historical Background: How the Treasures Came to Itsukushima
The Taira Clan’s Grand Offerings
The tradition of offering treasures to Itsukushima Shrine began in earnest during the late 12th century when Taira no Kiyomori, the most powerful figure in Japan, became governor of Aki Province (modern-day Hiroshima Prefecture). Kiyomori developed deep devotion to the shrine, and in 1164, he presented the Heike Nokyo—a set of lavishly decorated sutras that would become the shrine’s most famous National Treasure.
This magnificent offering sparked a tradition. Kiyomori’s family members followed with gifts of weapons, armor, and ceremonial objects, transforming Itsukushima into the Taira clan’s guardian shrine and a treasury of their golden age. Even after the Taira fell from power, successive rulers continued the practice—the Minamoto clan in the Kamakura period, the Ouchi clan during the Muromachi era, the Mori clan in the warring states period, and the Asano clan throughout the Edo period.
Particularly noteworthy are the sacred treasures offered when Retired Emperor Go-Shirakawa and Emperor Takakura made pilgrimages to the shrine between 1174 and 1181. These items, once believed to be personal belongings of the tragic child Emperor Antoku, provide an invaluable window into Heian court culture.
Nine Centuries of Preservation
Itsukushima Shrine has protected these treasures through more than 1,400 years of history. The hereditary chief priests—first the Saeki family, then the Fujiwara—treated these offerings not merely as donations but as sacred witnesses to the shrine’s history and faith. They maintained strict management systems that have allowed these fragile items to survive.
Rulers of each era also contributed to preservation efforts. In the early 1600s, feudal lord Fukushima Masanori commissioned repairs to the Heike Nokyo sutras, and the Asano clan continued this stewardship throughout the Edo period.
The Heike Nokyo: Japan’s Most Beautiful Decorated Sutras
A Masterpiece of Heian Aesthetics
Among all the shrine’s treasures, none surpasses the Heike Nokyo in fame and artistic achievement. This National Treasure consists of 33 scrolls: 30 volumes of the Lotus Sutra, one volume each of the Amida Sutra and Heart Sutra, plus Taira no Kiyomori’s personal prayer statement.
The sutras represent the pinnacle of Heian-period artistic expression. As Kiyomori wrote in his dedication, he sought to “exhaust all goodness and all beauty” in their creation. The paper itself is decorated with gold and silver leaf, fine metallic threads called noge, and gold dust known as sunago. The frontispiece paintings use brilliant mineral pigments to create images of breathtaking beauty.
What makes the Heike Nokyo extraordinary is that 32 members of the Taira clan each copied one scroll, with different decorations for each volume. The frontispiece illustrations showcase yamato-e, the refined Japanese painting style, depicting elegant courtiers at leisure and landscapes using the artistic technique called ashide-e, where objects like reeds contain hidden calligraphy. The bronze sutra box decorated with cloud and dragon designs, and the lacquered chest donated by Fukushima Masanori in 1602, demonstrate equally remarkable craftsmanship.
Samurai Armor: National Treasures of Warrior Culture
Itsukushima Shrine preserves outstanding examples of samurai armor from the Heian and Kamakura periods. Four suits of armor hold National Treasure designation, representing the finest surviving examples of this distinctly Japanese art form.
The Kozakura-gawa Ki-gaeshi Odoshi Yoroi (cherry blossom leather armor with yellow reverse lacing) is traditionally attributed to the legendary warrior Minamoto no Tametomo. This late Heian-period o-yoroi (great armor) features deerskin dyed with small cherry blossom patterns, then overdyed yellow using the sophisticated ki-gaeshi technique. The result combines martial power with aristocratic elegance.
The Kon-ito Odoshi Yoroi (dark blue thread laced armor) is said to have been offered by Taira no Shigemori, Kiyomori’s eldest son. Small iron and leather scales covered in black lacquer are laced together with thick indigo threads, creating a work of exceptional precision and refinement. These suits were made specifically as offerings rather than for battlefield use, explaining their elaborate decorative metalwork and pristine condition.
The National Treasure sword inscribed “Made by Tomonari” exemplifies the highest standards of Heian-period sword making. Tomonari was a master smith of the Ko-Bizen school, and this blade demonstrates why Japanese swords became legendary throughout the world.
Imperial Treasures and Performing Arts Artifacts
Gifts from the Imperial Court
The ancient sacred treasures (ko-shinpo) of Itsukushima Shrine center on gifts presented when Retired Emperor Go-Shirakawa and Emperor Takakura visited between 1174 and 1181. For centuries, these items were believed to be possessions of the ill-fated child Emperor Antoku, but records kept by the chief priest family confirmed their true origins as imperial offerings.
The collection includes magnificent ceremonial swords decorated with mother-of-pearl inlay depicting phoenixes and hosoge (sacred flowers), half-jackets (hanpi) made of Yamato brocade, and cypress fans (hiogi) painted with elegant scenes. These artifacts embody the refined taste of the Heian imperial court at its height.
The vermilion-lacquered sword box and small chest decorated with cranes carrying pine branches, both commissioned by chief priest Saeki Kagehiro in 1183, hold special historical significance. The inscriptions recording the maker and exact date make them invaluable for dating similar works. The chest, with its elegant maki-e lacquer design showing flocks of cranes in flight carrying pine twigs, represents the peak of Heian lacquerwork technique.
Bugaku Masks and Performance Treasures
Itsukushima Shrine has long been renowned for bugaku court dance performances, and seven dance masks designated as Important Cultural Properties survive from this tradition. Masks for dances including Ninomai, Saishoro, Nasori, Bato, Genjoraku, and Ryoo date from the Kamakura through Muromachi periods, providing crucial evidence of medieval performing arts traditions.
The shrine also preserves numerous costumes used in bugaku and Noh theater. Kyogen theater costumes featuring embroidered phoenixes, mandarin ducks, and chrysanthemums showcase extraordinary needlework using gold and silver thread. These performing arts treasures demonstrate that Itsukushima Shrine served not only as a place of worship but as a center of Japanese cultural achievement.
Protecting the Treasures Today
Since 1934, the shrine’s treasures have been housed in a purpose-built Treasure Hall (Homotsukan) using what was then cutting-edge preservation technology. The reinforced concrete building, revolutionary for its time, features exterior lacquer coating to harmonize with the traditional shrine architecture.
National Treasures and Important Cultural Properties remain in climate-controlled storage facilities with carefully regulated temperature and humidity. The museum typically displays high-quality reproductions, but the annual “Treasures Exhibition” held each autumn offers rare opportunities to view original items up close.
These treasures serve not merely as relics of the past but as vital educational resources for understanding Japanese cultural traditions. The decorative techniques of the Heike Nokyo continue to inspire contemporary craft artists, while the armor collection provides essential documentation for researchers studying the development of Japanese metalwork and lacquer arts.
The 2004 typhoon that damaged Itsukushima Shrine reinforced public awareness of the importance of protecting these irreplaceable cultural assets. The disaster sparked renewed support for cultural heritage preservation efforts across Japan.
FAQ
How many National Treasures does Itsukushima Shrine have?
Itsukushima Shrine holds 17 National Treasure designations in total, including 6 shrine buildings and various art objects. The art treasures include the Heike Nokyo sutras, four suits of samurai armor, swords, ancient sacred objects, cypress fans, and Buddhist ritual implements.
Can I see the original Heike Nokyo sutras?
The original Heike Nokyo is not normally on public display due to conservation requirements. The Treasure Hall shows excellent reproductions year-round. However, selected original scrolls are sometimes displayed during the annual autumn “Treasures Exhibition.” The sutras occasionally appear at special exhibitions in national museums as well.
What is the admission fee for the Treasure Hall?
Admission to the Treasure Hall costs ¥300 for adults, ¥200 for high school students, and ¥100 for elementary and junior high school students. This is separate from the shrine entrance fee, though combination tickets available at the shrine ticket office offer a discount. The museum is open from 8:00 AM to 5:00 PM every day of the year.
Why did Taira no Kiyomori donate so many treasures to this shrine?
According to legend, Kiyomori received a divine message in a dream while serving as governor of Aki Province, leading him to revere Itsukushima Shrine. The shrine’s location also held strategic importance for controlling Seto Inland Sea shipping routes. Kiyomori offered the Heike Nokyo and other treasures to pray for his clan’s prosperity and safe maritime travel.
How are the treasures stored and protected?
National Treasures and Important Cultural Properties are kept in storage facilities maintaining temperatures around 20°C (68°F) and humidity near 55%. Staff conduct regular inspections for pest damage and condition assessments, with conservation treatments performed as needed. The facility includes comprehensive disaster prevention systems for protection against typhoons and other natural hazards.
What makes the shrine’s samurai armor special?
The armor dates from the late Heian through early Kamakura periods and was created specifically as shrine offerings rather than for battlefield use. This explains their exceptional decorative quality and pristine preservation. The pieces feature unusually wide scales and thick lacing cords, crafted using the finest materials and techniques of the era.
When is the best time to visit for seeing original treasures?
The annual “Treasures Exhibition” in autumn (typically October or November) offers the best opportunity to view original artifacts. Check the shrine’s official website or contact them directly for specific dates, as the schedule varies each year. Some original items rotate through display throughout the year as well.
Summary
The treasures of Itsukushima Shrine represent nearly a millennium of Japanese cultural achievement, carefully preserved and passed down through generations. With 17 National Treasures among approximately 260 designated cultural properties, the collection encompasses the finest examples of decorated sutras like the Heike Nokyo, samurai armor and swords that document warrior culture, ancient imperial gifts reflecting court elegance, and masks and costumes preserving performing arts traditions.
These artifacts carry value far beyond their artistic beauty. Each piece serves as primary historical evidence documenting religious practices, technological development, and aesthetic sensibilities across centuries of Japanese history. Today, state-of-the-art conservation ensures these treasures will survive for future generations, serving as models for cultural heritage protection worldwide.
When you visit Itsukushima Shrine to see the famous floating torii gate, take time to explore the Treasure Hall as well. Standing before objects touched by emperors and offered by samurai warlords, you’ll connect with 900 years of Japanese history in a way no textbook can provide.
