
Guide
Kasajima, located on Honjima in the Shionoe Islands of the Seto Inland Sea, is a destination of immense historical significance. Once the stronghold of the Shionoe navy during the Sengoku period, it flourished during the Edo period as a vital maritime hub and a prosperous port town for shipping merchants. Today, it is recognized as a National 'Important Preservation District for Groups of Traditional Buildings,' preserving a wealth of architecture from the Edo and Me-iji eras.
The defining characteristic of this area is not just the age of the buildings, but the legacy of the 'Shionoe Carpenters'—highly skilled craftsmen whose techniques were legendary. Their architectural mastery, derived from advanced shipbuilding skills, influenced construction across Japan. As you walk the streets, you will see traditional tiled roofs, unique 'Mushiko-mado' (insect-cage windows), and intricate wood carvings that transport you back to a golden age of prosperity.
The history of Kasajima is deeply intertwined with maritime trade and craftsmanship. During the Edo period, the town thrived as a center for shipping. However, when the Shogunate shifted control of the shipping industry to Osaka in the 1720s, the local residents pivoted. They applied their expertise in shipbuilding to become the renowned Shionoe Carpenters, spreading their sophisticated architectural techniques to shrines, temples, and residences throughout Japan.
This transition shaped the very fabric of the town. The buildings here are more than just homes; they are masterpieces of craftsmanship. The well-preserved streetscape is a testament to generations of residents who meticulously maintained their heritage. You can even observe the strategic urban planning of the era, such as the labyrinthine alleys designed for defense.

Exploring the streets of Kasajima offers endless visual delights. Pay close attention to the 'Machiya' (townhouses) featuring 'Oya-ko Senbon Degoshi' (thousand-slat lattices) and the distinctive 'Mukuri' (curved) roofs.
Notable historic sites include:
While Kasajima is beautiful year-round, we recommend visiting on a clear morning. The sunlight hitting the white walls and traditional roof tiles brings the architectural details to life. In spring, seasonal flowers and cherry blossoms add a soft touch to the historic scenery. For a more contemplative experience, the golden hour at dusk offers a peaceful atmosphere, though please note that many facilities close early.

The best way to experience Kasajima is through slow exploration. Don't just walk; observe the textures of the stone walls, the intricate carvings on the eaves, and the unique window designs.
For a broader perspective, head to the local 'Viewpoints' located on the higher ground of the settlement. From here, you can enjoy a breathtaking panoramic view where the traditional rooftops blend seamlessly with the blue waters and islands of the Seto Inland Sea—a quintessential Japanese landscape.
Nearby, you can explore the remnants of the Shionoe Guard Post (Shionoe Kinban-sho), the local Chotoku-ji Temple, and Onoe Shrine. For a deeper immersion, consider staying at a 'Kominka' (traditional folk house) guesthouse on the island to experience the quiet rhythm of island life.
