Kuniyasu Family Residence

Kuniyasu Family Residence: A Window into Edo-Period Merchant Life in Iwakuni

Nestled along the historic Honmachi-suji street in the castle town of Iwakuni, Yamaguchi Prefecture, the Kuniyasu Family Residence (國安家住宅) stands as one of the most evocative surviving examples of Edo-period merchant architecture in western Japan. Originally built around 1850 as the headquarters of "Matsukane-ya," a prosperous business specializing in the manufacture and sale of bintsuke-abura (pomade oil used for styling traditional Japanese topknots), this imposing townhouse offers visitors a rare and authentic glimpse into the commercial life that once thrived in the shadow of Iwakuni Castle and the famous Kintai Bridge.

Registered as a National Registered Tangible Cultural Property in 2000, and further designated as a Landscape-Important Building by Iwakuni City in 2017, the residence has been carefully restored and now serves as the Iwakuni City Tourism Exchange Center "Honke Matsugane," welcoming visitors free of charge to explore its beautifully preserved interior and learn about the rich history of the Iwakuni castle town.

Historical Background

The story of the Kuniyasu Family Residence is inseparable from the history of the Iwakuni castle town itself. When Kikkawa Hiroie, a feudal lord who served during the Battle of Sekigahara, was reassigned to Iwakuni in the early 17th century, he established a carefully planned castle town beneath the mountain fortress of Iwakuni Castle. The town was divided into distinct zones: samurai residences occupied the Yokoyama district across the Nishiki River, while merchants and artisans settled in the Iwakuni district on the opposite bank, connected by the magnificent Kintai Bridge.

Among the prosperous merchant households that lined the Honmachi-suji — the main commercial thoroughfare of the castle town — was the Matsukane-ya, which built this residence around 1850 (the Kaei period). An ink inscription bearing the date "Kaei 3" (1850) was discovered on the underside of a floor board in the formal guest room, providing a reliable estimate for the building's construction date. The Matsukane-ya earned fame throughout the region for its high-quality bintsuke-abura, a pomade essential for styling the elaborate hairdos of the Edo period. So prominent was the business that its premises were reportedly used as a rest stop by feudal lords and government officials visiting to view the Kintai Bridge.

With the Meiji Restoration and the rapid westernization of Japanese fashion, demand for traditional hair pomade declined sharply. The Matsukane-ya eventually closed its doors, and in 1935, the Kuniyasu family purchased the property and converted it for use as a soy sauce brewery. When competition from major manufacturers made this enterprise unviable, the family continued to occupy the building as a private residence. In 2014, finding the aging structure increasingly difficult to maintain, the Kuniyasu family transferred ownership to Iwakuni City. The municipality undertook a thorough restoration of both the exterior and interior in 2015, and on March 25, 2017, the building reopened to the public as the Iwakuni City Tourism Exchange Center "Honke Matsugane."

Why It Was Designated a Cultural Property

The Kuniyasu Family Residence was registered as a National Registered Tangible Cultural Property (登録有形文化財) on February 15, 2000, in recognition of its exceptional value as a representative example of Edo-period merchant townhouse architecture in the Iwakuni castle town.

Several features make this building culturally significant. It is a large-scale machiya (townhouse) with a frontage spanning nine ken (approximately 16 meters), reflecting the wealth and status of the merchant family that built it. The structure is a two-story tsushi-nikai (low second-floor) design with a kirizuma-zukuri (gable-roofed) profile and hirairizukuri (eaves-facing entrance), characteristic of the nurigome-zukuri (plastered storehouse-style) construction method. The entire exterior is finished in fireproof earthen walls with white plaster — a practical yet beautiful defense against the fires that frequently plagued Edo-period towns.

Perhaps the most distinctive architectural feature is the set of three horizontal-lattice mushiko-mado (insect-cage windows) on the upper story facade, a design element rarely seen in residential buildings and considered highly unusual for a merchant's dwelling. The interior preserves a dramatic tōri-doma (earthen-floored corridor) that extends from the entrance to the rear of the building, with a soaring open ceiling supported by massive beams arranged in intersecting patterns, creating an atmosphere of grandeur and solidity.

Although the building has undergone some modifications over its long history, it retains its original character remarkably well, making it an invaluable document of the townscape and commercial life of the Iwakuni castle town during the late Edo period.

Architectural Highlights and Visitor Experience

Stepping through the entrance of the Kuniyasu Family Residence is like walking back in time to the bustling merchant quarter of Edo-period Iwakuni. The imposing facade immediately draws attention with its generous proportions and the elegant interplay of white plaster walls, dark timber elements, and the distinctive mushiko-mado lattice windows on the upper story.

On the ground floor, the original layout featured large openable storefronts fitted with buchou (hinged flip-up shutters) and a grand main entrance gate, designed to fully open the shop front to the street during business hours — a classic arrangement for a thriving commercial establishment. The southern facade retains a 2.8-meter section of traditional wooden lattice, adding visual rhythm and filtering gentle light into the interior.

The most breathtaking interior feature is the tōri-doma, the long earthen-floored corridor that runs the full depth of the building. Looking upward, visitors can marvel at the exposed roof structure: enormous hand-hewn beams crisscross overhead in a display of structural engineering that speaks to both the builder's skill and the owner's prosperity. The formal guest rooms (zashiki) with their tatami floors, alcoves, and garden views offer a serene contrast to the working spaces, illustrating how merchant families balanced commerce and refined living under one roof.

Today, the building serves as a tourist information center with panel exhibitions about the history of Iwakuni and the Matsukane-ya. Visitors can sample local specialties, including sake from Iwakuni's five historic breweries and regional delicacies such as Iwakuni-zushi (pressed sushi) and Iwakuni renkon (lotus root), available for tasting at a modest fee. On weekends, the venue offers a popular samurai armor (kacchū) dress-up experience where visitors can don authentic reproductions of Iwakuni domain armor and pose for photographs — a memorable activity for families and history enthusiasts alike.

Visitor Information

The Kuniyasu Family Residence, operating as "Honke Matsugane," is open year-round and welcomes visitors free of charge. The facility is located just a three-minute walk from the Iwakuni side of Kintai Bridge, making it a convenient stop on any tour of the Iwakuni castle town area.

Opening hours are from 9:00 AM to 5:00 PM from September through March, and from 9:00 AM to 6:00 PM during the warmer months of April through August. The center is open every day of the year with no regular holidays. Tasting of local sake and specialty foods is available for a small fee.

The samurai armor experience is held every Saturday and Sunday from 10:00 AM to 4:00 PM (last entry at 3:00 PM), priced at 1,000 yen per person, and reservations are recommended. Children's sizes (suitable for approximately 110 cm height) are also available.

As the building has no dedicated parking lot, visitors are encouraged to use the Kintai Bridge Shimogawara Parking Area, located along the Nishiki River riverbed near the bridge, and walk to the residence. By public transportation, take a bus from JR Iwakuni Station (approximately 20 minutes) to the "Kintai Bridge" bus stop, then walk about five minutes. From the Sanyo Expressway, the Iwakuni Interchange is approximately 10 minutes away by car.

Surrounding Attractions

The Kuniyasu Family Residence sits at the heart of one of western Japan's most rewarding historic districts, with numerous world-class attractions within easy walking distance.

The Kintai Bridge (錦帯橋), located just three minutes on foot, is Iwakuni's most famous landmark and one of Japan's three most celebrated bridges. This extraordinary five-arched wooden bridge, first constructed in 1673 by the third lord of the Iwakuni domain, Kikkawa Hiroaki, spans the clear waters of the Nishiki River in a series of graceful arches that have become an icon of Japanese engineering and aesthetics. The bridge is particularly stunning during cherry blossom season in spring and when illuminated at night.

Across the bridge, the expansive Kikko Park (吉香公園) occupies the grounds of the former Kikkawa clan residence. Selected as one of Japan's Top 100 Historical Parks, it features fountains, seasonal flower gardens, and numerous cultural heritage sites including the Important Cultural Property Kyu-Mekada Family Residence, the Kagawa Family Nagaya-mon Gate, and the Iwakuni Chokokan Museum.

A ropeway from Kikko Park whisks visitors up to Iwakuni Castle (岩国城), perched atop Mount Yokoyama at an elevation of approximately 200 meters. The reconstructed castle offers panoramic views of the Nishiki River, Kintai Bridge, and on clear days, the islands of the Seto Inland Sea. The castle's unusual "Momoyama-style Nanban" design, with upper floors projecting outward beyond the walls below, makes it architecturally distinctive among Japanese castles.

Other nearby attractions include the Iwakuni White Snake Museum (dedicated to the rare albino snakes found only in Iwakuni, designated a National Natural Monument), the Mekata House, and numerous temples and shrines scattered through the castle town's atmospheric narrow streets. The castle town itself was selected as one of the "100 Most Beautiful Historical Landscapes in Japan" in 2007.