Former Shimoyoichi Unjoya

The Former Shimo-Yoichi Unjoya: Hokkaido's Last Surviving Edo-Period Trading Post

Standing quietly along the coast of Yoichi Town in western Hokkaido, the Former Shimo-Yoichi Unjoya (旧下ヨイチ運上家) is the sole surviving example of an unjoya — a type of trading post that once dotted the shores of Ezo (present-day Hokkaido) during the Edo period. Designated as an Important Cultural Property of Japan in 1971 and a National Historic Site in 1973, this remarkable wooden structure offers visitors a rare and tangible window into the centuries-old trade relationship between the Matsumae Domain, Japanese merchants, and the indigenous Ainu people.

With its imposing 40-meter frontage, massive timber framework, and stone-weighted roof, the unjoya is a testament to the commercial ambitions and architectural ingenuity of Japan's northern frontier. For travelers seeking a deeper understanding of Hokkaido's pre-modern history — far removed from the island's more familiar ski resorts and lavender fields — this is an essential destination.

Historical Background: The Unjoya System and Ainu Trade

During the Edo period (1603–1868), the Matsumae Domain — the only feudal domain permitted to govern Hokkaido — controlled trade with the Ainu people through a system of designated trading areas known as basho (場所). Rather than collect rice-based taxes as was customary on the Japanese mainland, the domain derived its revenue from unjōkin (運上金), fees paid by contracted merchants who were granted exclusive rights to trade at these sites.

At their peak, roughly 80 unjoya were established across Hokkaido. Each functioned as the operational headquarters for a merchant contractor, staffed by a manager, interpreters, bookkeepers, and guards. At these posts, Ainu handicrafts, dried seafood, sea cucumbers, and herring products were exchanged for rice, sake, salt, iron tools, and other mainland goods. Over time, however, the system evolved as Japanese settlers increased in number, and the merchant contractors began employing Ainu labor in large-scale fishing operations rather than conducting equitable trade.

The Shimo-Yoichi Unjoya was rebuilt in 1853 by Hayashi Chōzaemon (林長左衛門), a merchant operating under the trade name Takeya (竹屋), who held the concession for the Yoichi trading area. The building served not only as a trading post but also as a checkpoint controlling travel between the Shakotan Peninsula and the Otaru region.

Why It Was Designated a Cultural Property

The Former Shimo-Yoichi Unjoya holds the distinction of being the only surviving unjoya structure in all of Japan. While the Matsumae Domain once maintained approximately 80 such posts throughout Hokkaido, all others were either demolished, repurposed, or left to decay after the Meiji Restoration of 1868 transformed Hokkaido's governance and economy.

The building was designated an Important Cultural Property on December 28, 1971, in recognition of its irreplaceable value as an architectural relic of the Matsumae Domain's administration of Ezo. Although the structure underwent a renovation in 1891 during the Meiji era, it retained its original layout and much of its original timber. In 1979, a comprehensive restoration returned the building to its 1853 configuration based on historical floor plans preserved by the Hayashi family. The surrounding grounds were additionally designated a National Historic Site on July 31, 1973, under the category of sites relating to transportation, commerce, and economic activity.

As one of the very few pre-modern buildings surviving in Hokkaido — where harsh winters, fires, and rapid modernization claimed most older structures — the unjoya stands as an invaluable document of the island's frontier history and the complex relationship between Japanese settlers and the Ainu people.

Architectural Highlights and Things to See

The Former Shimo-Yoichi Unjoya is an impressively large wooden structure with a frontage of approximately 40 meters, a depth of 16 meters, and a total floor area of 534 square meters. An estimated 213 cubic meters of timber were used in its construction. The architectural style reflects the Hokuriku region's fishing-village building traditions, featuring a gable-roofed (kirizuma) design with a distinctive stone-weighted board roof (ishioki yane), lattice windows, and paper sliding doors (shōji).

The Ground Floor

Upon entering, visitors step into the expansive ita-no-ma (wooden-floored hall), where seasonal fishermen once gathered during the herring season. Fishing tools, straw sandals, and dried fish hang from the ceiling around a sunken hearth, vividly recreating daily life in the trading post. The massive pillars and beams overhead — many of which are original 19th-century timbers — testify to the building's robust construction.

A notable feature of the interior is the graduated floor height: rooms occupied by higher-ranking individuals are set progressively higher than those used by ordinary workers. The formal reception rooms along the corridors display life-sized mannequins dressed as Matsumae Domain officials, merchant managers, and Ainu trading partners, helping visitors visualize the social hierarchy that governed daily operations.

The Upper Floor

Two steep staircases lead to the second floor, which is divided into separate sleeping quarters for travelers and fishermen. Interestingly, one section of the upper floor is walled off — a deliberate security measure preventing access to the rooms of high-ranking samurai officials below, protecting them from potential attack from above.

The Garden and Exterior

Behind the main building, a traditional Japanese garden has been recreated, offering a tranquil space to appreciate the unjoya's characteristic stone-weighted sawara cedar board roof from ground level. The adjacent Moire Shrine provides an additional point of interest. The front of the building faces what was once a beach where herring were dried — now transformed into a marina promenade, though the sweeping coastal views remain.

Visitor Information

The Former Shimo-Yoichi Unjoya is open from mid-April through mid-December, with hours from 9:00 AM to 4:30 PM. The facility is closed on Mondays (except when Monday falls on a national holiday), on the day following national holidays, and throughout the winter season. Admission is 300 yen for adults and 100 yen for elementary through high school students.

A combined ticket covering four Yoichi heritage facilities — the Former Shimo-Yoichi Unjoya, the Former Yoichi Fukuhara Fishing Grounds, the Yoichi Fisheries Museum, and the Fugoppe Cave — is available for 960 yen (adults) and 320 yen (students), representing excellent value for visitors planning to explore the town's historical sites.

Volunteer guides are available on weekends and holidays during the open season and offer informative tours of the interior. English-language printed materials are limited, so visitors may wish to use a translation app for the Japanese-language exhibit labels. The building is located about a 20-minute walk from JR Yoichi Station, or a short bus ride on the Bikuni-bound line, alighting at the Yakuba-mae (Town Hall) stop.

Nearby Attractions

Yoichi Town offers a wealth of cultural and culinary experiences that pair beautifully with a visit to the unjoya. The following sites are all within easy reach.

The Nikka Whisky Yoichi Distillery, founded in 1934 by Taketsuru Masataka — known as the father of Japanese whisky — is just a 5-minute drive or 15-minute walk from the unjoya. The distillery's stone buildings are themselves registered cultural properties, and free guided tours (reservation required) include whisky tasting sessions.

The Former Yoichi Fukuhara Fishing Grounds (旧余市福原漁場), about 15 minutes on foot along the coast road, preserves a complete herring fishing complex from the late 19th century, including processing buildings, worker dormitories, and the manager's residence. This site was also used as a filming location for the NHK drama Massan.

The Fugoppe Cave (フゴッペ洞窟) features mysterious petroglyphs estimated to date from approximately 800 to 1,200 years ago, offering a glimpse into Hokkaido's ancient past. The Nishizakiyama Stone Circle, a Jomon-period archaeological site, is also worth a visit.

For those with more time, the Shakotan Peninsula — famous for its stunning cobalt-blue waters known as "Shakotan Blue" — lies just to the west, while the historic port city of Otaru is about 20 kilometers to the east, accessible by car or train.