The Legend of the Ise Grand Shrine
At a Glance
- Central figures: Amaterasu Omikami, the Sun Goddess and ruler of Takamagahara; Princess Yamatohime-no-Mikoto, who carried the Sacred Mirror across Japan in search of its permanent home; and Emperor Suinin, who gave her the task.
- Setting: Ancient Japan, from Takamagahara (the heavenly realm) to the banks of the Isuzu River in Ise Province (present-day Mie Prefecture), rooted in Shinto mythology and imperial tradition.
- The turn: After twenty years of pilgrimage, Yamatohime receives a divine revelation at the Isuzu River - Amaterasu herself names this place as where she wishes to dwell.
- The outcome: Yamatohime establishes the Ise Grand Shrine, Ise Jingu, as the permanent home of the Sacred Mirror and the center of Amaterasu’s worship; it becomes the most sacred Shinto site in Japan.
- The legacy: The shrine still stands, and every twenty years the Shikinen Sengu ritual requires its complete reconstruction - a practice recorded from 690 CE - during which the Sacred Mirror is transferred in ceremony to the newly built structure.
Amaterasu was born from Izanagi’s left eye. He had just fled the underworld of Yomi, where he went searching for his dead wife Izanami and found instead a rotting, furious thing that was no longer her. He ran. At the mouth of the underworld he sealed the passage with a boulder and began to wash himself in a river, and from the impurities he shed came dark spirits, and from the acts of washing came gods - the moon from his right eye, the storm from his nose, and from his left eye the Sun Goddess herself, Amaterasu Omikami. She rose into Takamagahara, the Plain of High Heaven, and took her place as its ruler.
Her connection to the earth was made through her grandson, Ninigi-no-Mikoto. When Amaterasu sent Ninigi down to govern the land, she placed into his hands three objects: the Yata no Kagami, the Sacred Mirror, representing truth and wisdom; the Yasakani no Magatama, a jewel; and the Kusanagi-no-Tsurugi, the Grass-Cutting Sword. These Three Sacred Treasures would pass through the imperial line that descended from Ninigi, marking each generation as divinely authorized to rule. Of the three, the mirror was considered most sacred - Amaterasu’s own reflected presence, the clearest sign of her continued attention to the world below.
The Task Given to Yamatohime
The mirror had been kept close to the imperial palace, but this arrangement was not permanent. Emperor Suinin, reigning in the early centuries CE, grew uneasy with the proximity of so potent an object to the ordinary workings of a court. He wanted a proper home found for it - a place suited to the goddess’s presence, somewhere pure, somewhere chosen not by men but by Amaterasu herself.
He gave the task to his daughter, Yamatohime-no-Mikoto. She was to travel Japan until the goddess told her to stop.
This was not a short journey. Yamatohime carried the Sacred Mirror from province to province, through forests and across mountain passes, along rivers and into unfamiliar territory. She would arrive somewhere that seemed possible, and there would be no sign. She would move on. Twenty years passed. She had traversed much of the country and was still walking when she reached Ise Province, on the eastern coast of the Kii Peninsula, and came to the banks of the Isuzu River.
The Voice at the Isuzu River
The river ran clear between stands of old cedar and cypress. The air held the smell of water and resin. Yamatohime stopped.
It was here that the goddess spoke - or the goddess’s presence made itself felt in the way such things do in the Shinto tradition, not always as a voice, but as a certainty. Amaterasu declared that this was the place. The ancient forests. The clean water. The distance from the noise of the court. She wished to be enshrined here, at the Isuzu River, in Ise.
Yamatohime built the first shrine on that ground. The mirror was placed within it. The pilgrimage was over.
Naikū and Gekū
What Yamatohime established eventually grew into the complex now called Ise Jingu, which comprises two main precincts.
The Naiku, the Inner Shrine, sits deep in the forest and houses the Sacred Mirror. Its architecture is deliberately plain - the Shinmei-zukuri style, cypress wood left in its natural color, thatched roofing, no nails. The structure is held together by an ancient interlocking method. Simplicity here is not absence; it is the point. Ornamentation would crowd out what the shrine is for.
The Geku, the Outer Shrine, stands some distance away and is dedicated to Toyouke Omikami, the goddess of agriculture, food, and industry. Toyouke was brought to Ise to provide offerings for Amaterasu - food, clothing, the practical necessities that sustain even a goddess’s presence in the world. The two shrines operate in relation to each other: Geku supplies what Naiku requires. Pilgrims traditionally visit Geku first, then make the longer walk to Naiku through the forest, crossing the Uji Bridge over the Isuzu River before entering the inner precincts.
The trees around Naiku are enormous - centuries-old cryptomeria, their trunks wider than a man’s armspan. Walking among them toward the shrine, the light changes. The forest is maintained as part of the sacred site, inseparable from it.
The Shikinen Sengu
Every twenty years, both shrines are torn down and rebuilt from new materials on adjacent plots of land that are kept empty and waiting for exactly this purpose. The practice is called the Shikinen Sengu, and it has been carried out since 690 CE - more than sixty times. When construction is complete, the Sacred Mirror and the other objects housed in the shrine are moved from the old structure to the new one in a night ceremony of great formality and stillness, the procession moving by torchlight.
The shrines are never allowed to age into ruin. They are always new, and they are always ancient.
The craftsmen who build them are called miyadaiku, shrine carpenters trained specifically for this work. The techniques they use - the joinery, the way the cypress logs are fitted, the thatching - have been transmitted across generations precisely because the reconstruction occurs on a regular cycle. The ritual is also a school. Each rebuilding trains the next generation in skills that might otherwise be lost, because there is no other occasion on which this kind of construction is done.
When the old shrine is dismantled, its timbers are not discarded. They are sent to other shrines across Japan for use in gates and smaller structures, so the sacred wood continues its function elsewhere.
The Emperor and Kannamesai
The emperor’s relationship with Ise Jingu has always been direct. The shrine exists primarily as the site of the imperial family’s worship of their divine ancestor, and the emperor performs rituals there to pray for the nation’s harvest, safety, and prosperity. This is among the most ancient of imperial duties.
The Kannamesai, the First Harvest Festival, is held each autumn. Offerings of newly harvested rice are made to Amaterasu before any of the year’s crop is consumed by human hands. The goddess receives the harvest first. Only then is it shared among the living. The festival is among the most important in the Shinto calendar, and it is performed by the emperor himself.
Ise Jingu draws millions of visitors each year, and has done since the medieval period, when roads to Ise became among the most traveled in Japan. Pilgrims came from every part of the country, and the journey itself was understood as part of the worship. The river that Yamatohime followed to the end of her twenty-year search still runs past the entrance to the Inner Shrine. Its water is still used in the shrine’s purification rites. It is still called the Isuzu.