Zozan Shrine Main Hall

A Sanctuary of 1938, Built to a Much Older Pattern

Zozan Shrine Main Hall (象山神社本殿, Zōzan-jinja Honden, also written Zozan Jinja Honden) is the inner sanctuary of Zozan Shrine in Matsushiro, Nagano City, Nagano Prefecture, completed in 1938 and entered on Japan's register of Tangible Cultural Properties on 26 December 2005.

The name trips up most visitors before they arrive. The characters 象山 are usually read Shōzan elsewhere in Japan, but in Nagano the local reading has always been Zōzan, and the shrine follows local usage. It honours Sakuma Shōzan (1811-1864), a retainer of the Matsushiro domain who studied Dutch gunnery and Western science, cast cannon, experimented with telegraphy and glass, and taught Katsu Kaishū, Yoshida Shōin and Sakamoto Ryōma before being cut down in Kyoto.

The shrine itself is young. Plans began in 1913, the fiftieth anniversary year of Sakuma's death, driven by Yokota Hideo, a Matsushiro native who had risen to head the Great Court of Cassation. Permission to found the shrine came in 1931; funds arrived from every municipality in the prefecture, from the Shinano Education Association, and from schoolteachers across the country. The buildings went up on the site of Sakuma's own family residence, and on 3 November 1938 the shrine was formally established with prefectural rank.

So the sanctuary that stands at the back of the precinct is a Shōwa-period building through and through. What makes it interesting is that it does not look like one.

Why the Main Hall Was Registered

The Agency for Cultural Affairs registered the building under the criterion covering structures that serve as a standard or model of design. Five other buildings in the same precinct went onto the register on the same day: the worship hall and norito hall, the treasure hall, the ex-voto hall, the ceremonial annexe and the shrine office. The main hall carries registration number 20-0221.

The official description is technical, and each term repays a little unpacking. The hall is a sanken-sha nagare-zukuri: a sanctuary three bays wide, roofed so that the front slope runs on past the wall and reaches forward over the steps in a single unbroken curve. This is the most widespread sanctuary form in Japan, and building one three bays wide rather than the commoner one bay signals ambition.

Above, the eaves use futanoki shigedaruki, two tiers of closely ranked rafters, sheathed in copper plate. Below, the structural logic changes as the eye moves outward. The core of the building, the moya, stands on round columns; the projecting hisashi bay in front uses square ones. Round columns carry more status than square, so the shift marks the boundary between sacred core and forward extension without any need for decoration to announce it.

The bracket sets are mitsudogumi, three-block clusters fitted with sanehijiki bearing arms. A horizontal tsunagi-kōryō, an arched tie beam, links core and forward bay. On the gable ends, a kaerumata frog-leg strut sits on the beam. A veranda runs all four sides, and there are no wakishōji, the panelled screens that usually close off the veranda ends.

That last omission is the detail worth holding on to. Wakishōji are one of the surfaces where a shrine carpenter shows off, and leaving them out is a decision, not an economy. The registration file describes the whole building as following traditional forms with a deliberately plain, old-fashioned design. The shrine's own account calls it a grand sanctuary of Momoyama-style nagare-zukuri built entirely in Japanese cypress.

There is a quiet paradox in that. A man remembered for pushing Japan towards Western technology is enshrined in a building that avoids every stylistic marker of its own decade.

Seeing It, and What Surrounds It

The precinct is compact and can be walked in twenty minutes, though most people stay longer. Pass under the torii, follow the gravel approach, and the first building you meet is the worship hall, south-facing, with an irimoya hip-and-gable roof and shitomido lattice shutters that give it an oddly domestic air. The main hall stands behind it, connected through the norito hall. Sanctuaries in Japan are not entered by worshippers, and this one is no exception: you pray at the front and view the sanctuary from outside.

Angle for the roof. From the side approaches the copper sweep of the nagare-zukuri profile and the doubled rafter tiers are clearly visible above the enclosure, and in slanting afternoon light the rafter shadows stripe the underside of the eaves. Copper laid in 1938 has weathered to a soft green that reads very differently from the fresh brown of new sheet work.

Elsewhere in the grounds are two buildings moved here from outside. Kōgitei was a detached wing of the villa where Sakuma spent nine years under house arrest after Yoshida Shōin's attempt to stow away on Perry's fleet; visiting activists argued national policy with him in its upstairs room. It was relocated to the shrine in 1978 and is a Nagano City designated cultural property. En'utei is the teahouse from the Kyoto lodging where he spent his final two months, brought here and renamed after the move.

Near the entrance to the birthplace plot lies Kokoro-no-ike, a small pond garden registered as a national Monument in July 2008. Its water comes from the sensuiro, the channel network that once threaded through Matsushiro's samurai quarter carrying water for gardens and daily use, and it sits in a chain of gardens fed by the same flow. A bronze of Sakuma stands near the torii, raised in 2010 before his bicentenary; busts of the domain lord Sanada Yukitsura and of six associates were unveiled in 2018.

Practical matters. Entering the grounds and praying at the hall costs nothing. The shrine office handles amulets, prayers and seal stamps from 9:30 to 16:00, and the telephone number is 026-278-2461. Published gate hours differ between listings, so anyone planning an early or late visit should call ahead. From Nagano Station, take an Alpico bus for Matsushiro from stand 3 at the Zenkōji exit, about thirty minutes, and get off at Matsushiro Hachijūni Ginkō-mae; the shrine is five to ten minutes on foot. Drivers come off the Jōshin-etsu Expressway at Nagano IC, roughly 1.8 kilometres away. There is a small car park by the torii and a larger one to the south near the Shōzan Memorial Museum. Photography in the open precinct is normal practice, but check for posted notices and step aside when a ceremony is under way.

Late October and early November suit the visit best, when the maples around the pond turn and the Matsushiro townscape, still laid out on its Sanada-era street grid, is at its most legible.