Former Gotsu Post Office

Former Gōtsu Post Office: A Meiji-Era Western-Style Gem in Shimane

Nestled along the historic streetscape of Gōtsu Honmachi in Shimane Prefecture, the Former Gōtsu Post Office (旧江津郵便局) stands as one of the oldest surviving post office buildings in Japan. Built around 1887 (Meiji 20), this charming two-story wooden structure blends Western architectural influences with Japanese craftsmanship, offering visitors a rare glimpse into the modernization of rural Japan during the Meiji period. Registered as a National Tangible Cultural Property in 2009, the building is a beloved landmark along the Tenryō Gōtsu Honmachi Iraka Kaidō—a heritage streetscape renowned for its red Sekishū tile rooftops and Edo-period atmosphere.

Historical Background

The origins of the Gōtsu Post Office trace back to July 1, 1872 (Meiji 5), when it was established as the Gōda Mail Handling Office (郷田郵便取扱所) during the early years of Japan's modern postal system. As the postal network expanded, the office was upgraded through several classifications before being renamed the Gōtsu Post Office in 1890 (Meiji 23).

The current building was constructed around 1887 at the request of the local postmaster, who commissioned Toyoda Tōtarō, a prominent timber merchant in the area, to design and build the structure. Toyoda reportedly traveled to the port city of Kobe to study Western-style architecture, drawing inspiration from trading houses and churches he observed there. He then recreated those design elements in this compact yet elegant building in rural Shimane. The structure served as an active post office until September 1927 (Shōwa 2).

Gōtsu Honmachi itself was a thriving river port town at the mouth of the Gōnokawa River, the largest river in the Chūgoku region. During the Edo period, the area was designated as a tenryō (direct shogunate territory) administered by the Ōmori Magistrate's Office. When the Kamigata sea route opened in the late 17th century, Gōtsu became a bustling port of call for kitamaebune trading vessels and a shipping point for government rice, with 40 to 50 sailing ships crowding the riverbanks at peak times.

Why It Was Designated a Cultural Property

The Former Gōtsu Post Office was registered as a National Registered Tangible Cultural Property (building) on January 8, 2009. Its designation recognizes several notable qualities. It is extremely rare for a post office building from the 1880s to survive in such good condition, making it one of the oldest extant post office structures in Japan. The building demonstrates the creative adaptation of Western architectural forms by local craftsmen in a rural setting during the Meiji era, reflecting the rapid modernization that swept through even remote areas of Japan. Furthermore, the structure adds distinctive visual character to the traditional townscape of Gōtsu Honmachi, complementing the surrounding Edo-period merchant houses and storehouses with its unique Western flair.

Architectural Highlights

Despite its modest footprint of just 38 square meters, the Former Gōtsu Post Office is rich in architectural detail. The two-story wooden building features a hipped roof with gable-end entry (寄棟造妻入), clad in traditional san-kawara tiles. The ground floor features an inviting porch at the front entrance, while the second floor boasts an elegant balcony—both elements that reflect the Western architectural vocabulary Toyoda encountered in Kobe.

The exterior walls are finished in white lime plaster (shikkui), creating a bright, clean appearance. At the building's corners, grey plaster (nezumi-shikkui) is applied to simulate the look of Western-style cornerstones, a clever decorative technique that bridges Japanese plastering traditions with European design sensibilities. The pillars and window frames are painted in a distinctive blue, lending the building a pastel charm that has made it a favorite subject for photographers visiting the Iraka Kaidō.

In front of the building, visitors can observe a hanaguri-ishi (nose-ring stone)—a stone with a hole through its center that was once used to tether oxen and horses that carried goods through the town, serving as a tangible reminder of the area's mercantile past.

Restoration and Preservation

By the early 2000s, the building had deteriorated considerably due to its advanced age. Around 2007–2008, a major renovation was undertaken to restore the structure while preserving its historical character. The restoration work was carried out as part of broader community efforts to revitalize the Gōtsu Honmachi district. In 2003, the area had been recognized as a "Model District" by the Dream Road Renaissance Promotion Council (夢街道ルネサンス推進会議), spurring local residents and authorities to invest in the preservation of the district's historic architecture.

Visitor Information

The Former Gōtsu Post Office is located along the Tenryō Gōtsu Honmachi Iraka Kaidō, a picturesque heritage streetscape that can be enjoyed on foot. The building is primarily appreciated as an exterior landmark. Walking tours of the entire Iraka Kaidō district are available, and a spring town-walking event called "Furari" is held annually, featuring stamp rallies and local shops that bring the quiet streets to life for a day.

The Iraka Kaidō is best experienced as a leisurely stroll, taking in the distinctive red Sekishū tile rooftops, historic merchant houses, old storehouses, and numerous shrines and temples that line the route. Another notable registered cultural property nearby is the Former Gōtsu Town Hall (旧江津町役場本庁舎), a reinforced concrete building from 1926 with a striking Art Deco–influenced façade.

Surrounding Attractions

Gōtsu and its surroundings offer a wealth of experiences for visitors exploring the San'in region of western Japan.

• Gōnokawa River: The longest river in the Chūgoku region, offering scenic views and a sense of the river transport heritage that defined Gōtsu's history.
• Arifuku Onsen: A hot spring resort with over 1,350 years of history, located about 20 minutes from central Gōtsu. Known for its beautifying waters and tranquil mountain setting.
• Shimane Aquas: One of the largest aquariums in the Chūgoku and Shikoku regions, straddling the border of Hamada and Gōtsu cities, famous for its beluga whale bubble ring performances.
• Sekishū Tile Kilns: Gōtsu is a major production area for Sekishū-gawara (石州瓦), one of Japan's three great roof tile types, recognized for their striking red color and exceptional durability.
• Iwami Kagura: The dynamic and colorful Shinto theatrical dance tradition of the Iwami region, performed at local shrines and event venues throughout the year.