Kojinyama Shrine

A hilltop shrine to fire and the kitchen hearth

Kojinyama Shrine (荒神山神社, Kōjinyama Jinja) is a Shinto shrine on the summit of Mount Kojin in Kiyosakicho, Hikone City, Shiga Prefecture, established in its present form in 1868 and holding six structures that were registered as Registered Tangible Cultural Properties in 2017.

The summit stands 284 metres above the plain on the eastern shore of Lake Biwa, and the shrine has been there far longer than any of its buildings.

The shrine enshrines Homusubi no Kami, Okitsuhiko no Kami and Okitsuhime no Kami, the deities of fire and of the kitchen hearth, together with four purification deities in a secondary sanctuary. Locally the shrine is called Kojin-san. Households across the eastern shore of Lake Biwa keep its paper talismans above the stove, and in some districts the shrine still delivers new ones to each village at the close of the year.

The shrine's own account traces the site to the reign of Emperor Tenji, when the summit was designated a place of purification and prayer for four surrounding districts. In the Nara period the monk Gyoki is said to have brought the deity Sanpo Kojin here and founded a temple, Okuyamadera. Because the temple belonged to the Mount Hiei school, Oda Nobunaga's forces burned it during the wars of the sixteenth century, and its treasures and records were lost with the buildings. Under the Ii lords of Hikone the temple recovered, receiving an annual grant of 15 koku of rice for some three hundred years.

In 1868 the new government ordered the separation of Buddhism and Shinto. Okuyamadera was dissolved, new halls were built, and the site was renamed Kojinyama Shrine. Every registered building on the summit dates from after that change, which is why a shrine with so long a story carries such young architecture.

How the precinct is laid out

Kojinyama Shrine occupies two levels. At the foot of the mountain, where the main approach called Honzaka begins, a large stone torii marks the entrance, and beside it stands a worship pavilion built so that people unable to climb could pray towards the summit from below. That pavilion, along with the shrine office, the study hall and its inner gate on the summit, is a Hikone City cultural property; the study hall survives from the temple period.

On the summit the halls face south in a single line. The main hall stands at the back, a small connecting hall links it forward to the worship hall, and the offering hall is attached to the east veranda of the worship hall. Only the kagura hall breaks the line, standing at the southwest corner of the precinct and facing east. Visitors stand in front of the worship hall, from where the main hall reads as a roof and a gable seen over the connecting hall.

The approach at Honzaka was rebuilt between June and September 2026 with stone paving and compacted granite sand, finished on 18 September 2026. What used to turn into a streambed in heavy rain is now a firm path.

The individual halls, their structure and what to look for are covered on their own pages.

Six registrations, one day

The registered properties are the main hall, the worship hall, the connecting hall, the offering hall, the kagura hall and the torii. Their registration numbers run consecutively from 25-0392 to 25-0397, all were registered on 2 May 2017, and all six were listed under the same criterion, as structures contributing to the historic character of the national landscape.

Their dates spread over half a century. The main hall of 1879 is the oldest. The worship hall, connecting hall and offering hall followed in 1895, the torii at the foot of the mountain in 1909, and the kagura hall in 1928 completed the group.

None of them is large. The worship hall covers 44 square metres, the kagura hall 41, the main hall 34, the offering hall 12, and the connecting hall only 10. The effect at the summit comes from small buildings touching one another rather than from a single dominant hall, and the Agency for Cultural Affairs describes the connecting hall and the offering hall in exactly those terms, as parts that compose the look of the shrine complex.

Getting there and visiting

Two paved forest roads, one on the west flank of the mountain and one on the east, climb to the summit precinct of Kojinyama Shrine. The shrine gives the drive as about 7 minutes and warns that the roads are narrow, so oncoming traffic needs care, and that buses and other large vehicles cannot use them. Parking is available at the summit and a little below it.

The nearest station is Kawase on the JR Biwako Line, about 15 minutes by taxi. On foot, the city's walking map allows about 30 minutes from Kawase Station to the nearest trailhead, with the climb on top of that. By car from Hikone Castle, the lakeside road reaches the Kojinyama Park car park in about 20 minutes.

There are no fixed opening hours for worship, but the shrine asks visitors not to come after dark or in snow and storms. The shrine office is not staffed every day, and prayer services must be booked by telephone on 0749-43-5545. The shrine's site lists no admission charge.

All six buildings are seen from outside. None of the interiors is opened to visitors, so a visit means walking the precinct and reading the buildings from the grounds. No photography restrictions are posted on the shrine's site, though commercial filming is arranged in advance through the Hikone City film commission, which lists the precinct as available depending on the project.

The Minazuki festival

The great festival of Kojinyama Shrine falls on 29 and 30 June, the eve and the main day of the Minazuki festival, which marks the summer purification. A ring of woven grass is set up in front of the worship hall for both days, and anyone may pass through it. Children of about three and under offer kagura dance in a rite said to protect them from fire for the rest of their lives.

On the evening of the 29th, stalls line the approach in front of the worship pavilion at the foot of the mountain, where a second grass ring is raised. On the summit the shrine sells minazuki, a sweet of white uiro topped with adzuki beans, cut in the triangle that stands for a shard of ice against the summer heat.