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Why Japan's most sacred shrine is rebuilt every 20 years

Ise Jingu is in the midst of its once-every-20-years rebuilding cycle, giving travellers a rare chance to witness one of the country’s oldest rituals in motion

Dewi Nurjuwita
Written by
Dewi Nurjuwita
Contributor, Time Out Asia
Ise, Japan at Ise Grand Shrine Hall for Special Prayer.
Photograph: Sean Pavone/Shutterstock
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Japan has no shortage of temples and shrines, but Ise Jingu offers a different kind of pull. There is no gilded excess here - just forest, ritual, and stillness. That calm is precisely what makes this moment so special: the shrine has entered its once-every-20-years rebuilding cycle, giving travellers a rare chance to catch one of Japan's oldest traditions in motion.

What is Ise Jingu?

Ise Jingu is widely considered Japan's most important Shintō shrine. Rather than one single building, it is a sprawling complex of 125 shrines centred around the Inner Shrine (Naikū) and Outer Shrine (Gekū) in Mie Prefecture. Its spiritual importance is tied to Amaterasu, the sun goddess at the heart of Shintō belief.

Why is it rebuilt every 20 years?

It's based on a ritual called Shikinen Sengu - a centuries-old practice in which the shrine is ceremonially rebuilt every two decades. It is less about replacement than renewal: salvaged timber is redistributed to shrines across Japan, skills are passed down, and the cycle keeps traditional craftsmanship alive. In Shintō terms, it is a way of preserving vitality through regeneration.

When is the rebuilding happening?

The current 63rd cycle began in 2025 and will run until 2033, when the sacred mirror is transferred to the newly completed sanctuary. So while this is very much a once-in-a-generation moment, it is not over in a flash.

What can visitors see?

The most sacred rites remain closed to the public, and visitors cannot enter the main sanctuaries. But some parts of the cycle are visible, and that is where the timing gets interesting. During the Okihiki Festival, huge cypress logs are ceremonially transported to the shrine in a lively public procession. It's one of the rare moments when this deeply private ritual becomes outwardly festive.

When is the best time to go?

If you want to catch the rebuilding cycle at its most visible, aim for May to August. For Naikū, logs are floated along the Isuzu River from May 9 to June 13, while Gekū's processions through Ise City run from July 25 to August 2. The Sengūkan Museum is worth a stop year-round if you want the fuller backstory.

What else is there to do around the shrine?

The pilgrimage-town atmosphere is part of the appeal. Around the shrine, Oharaimachi and Okage Yokocho are lined with teahouses, local food stalls and old-school shops that have long served visitors making the journey here. Come for the ritual, stay for the Ise udon, sake and slow wandering.

Why go now?

Because Ise Jingu is not just standing there as an ancient building – it is actively renewing itself. And for a place so rooted in continuity, that makes this one of the most meaningful times to visit. 

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