Hisaizu Shrine

On the eastern edge of Saitama Prefecture, in the old castle town of Iwatsuki, Hisaizu Shrine occupies land that belongs simultaneously to two histories — the spiritual and the martial. Its precincts are carved from the ruins of Iwatsuki Castle, and the towering trees that shade the approach have witnessed centuries of battle, fire, and quiet revival.

Revered as the sōchinju — the paramount guardian shrine — of Iwatsuki, this is the mother shrine of a loose constellation of Hisaizu shrines that dot the Motoarakawa river basin across Saitama, all tracing their devotion to the same primordial deity of the land.

Tradition holds that Hisaizu Shrine was founded roughly 1,400 years ago, during the reign of Emperor Kinmei, when the Haji clan are said to have carried a divided spirit of Hisaizu Myōjin — another name for Ōkuninushi — from Izumo and enshrined it here at Iwatsuki. The founding date is unverified in contemporary records and must be treated as oral tradition rather than documented history.

The shrine entered a new chapter in 1457 when the warlord Ōta Dōkan chose this ground as the spiritual anchor of Iwatsuki Castle, formally designating it the castle’s protective shrine. That relationship with the castle’s fate would prove consequential: a fire of suspicious origin swept the precincts in 1875, destroying every structure. Rebuilding stretched over four decades, finally completing in 1915. The shrine progressed through the Meiji ranking system — village shrine in 1873, district shrine by 1923 — before achieving the coveted prefecture shrine (kensha) rank on 19 October 1945.

The sole enshrined deity is Ōkuninushi no Mikoto (大国主命), also known as Ōnamuchi. He is the great shaper of the land before the heavenly descent, the kami who built the nation alongside Sukunabikona, who mastered medicine, and who graciously yielded sovereignty of the manifest world to the heavenly deities. Across the Motoarakawa basin, where Hisaizu shrines cluster, Ōkuninushi is venerated under the local epithet Hisaizu Myōjin — a regional identity that links this network of shrines to the Izumo tradition while remaining distinctly Musashino in character.

The shrine’s most playful identity comes from its name: hisaizu (久伊豆) can be read in Japanese as kuizu — quiz. This phonetic coincidence made Hisaizu Shrine nationally famous in 1987 when the Iwatsuki branch was chosen as the domestic second-round venue for Nippon TV’s iconic game show Shijō Saidai! Dai 11 Kai Amerika Ōdan Ultra Quiz. Contestants gathered within the shrine precincts to compete for a place on the transatlantic journey — the sacred and the absurd united under ancient cedar. The episode became part of the shrine’s popular lore, and the reading kuizu still draws quiz enthusiasts and trivia fans to the grounds today.

The deeper mythological layer belongs to Ōkuninushi himself: his long journey of trials, death and resurrection by the Mother Goddess, and ultimate gift of the land to the heavenly line is one of Shinto’s great founding narratives, carried here from Izumo by the Haji clan and rooted in Musashino soil.

The shrine sits inside the earthworks of the former Iwatsuki Castle — now a designated castle-site park — giving the approach an unusual depth of layered history. The present main hall (honden) and hall of worship (haiden) date from the 1875–1915 rebuilding campaign; their style is restrained Edo-period shrine architecture. The grounds host nine other Hisaizu shrines within Iwatsuki Ward alone, making the main shrine the acknowledged center of a local network rather than an isolated monument. Peacocks are kept in the precinct grounds, a distinctive sight that has become a casual emblem of the shrine.

The exact calendar of the shrine’s annual grand festival (rei-taisai) is not confirmed in the available sources. Hisaizu Shrine is positioned within the wider tradition of Ōkuninushi-centered worship, which tends to align festivals with agricultural cycles — planting in spring and harvest thanksgiving in autumn. As with all shrines in the Hisaizu network, the scale and character of each festival is shaped by local community tradition rather than a centralized liturgical calendar. Visitors should contact the shrine directly for current festival dates.

The castle-site park surrounding the shrine is renowned for its cherry blossoms in late March and early April, when the earthworks and moats become one of Saitama’s most photographed spring scenes. Autumn brings quieter beauty — the old trees deepen in color through November and the air cools enough to make the long precincts genuinely pleasant on foot. Summer mornings are calm and fragrant before the heat rises. Quiz fans often visit year-round as a niche pilgrimage, but there is no dedicated season for that particular custom.