Honjima Island Travel Tips

Honjima Island (本島), the second largest of the Shiwaku Islands, lies off the coast of western Kagawa Prefecture and is steeped in maritime history. Once the administrative and strategic center of the Shiwaku archipelago, Honjima served as the headquarters of the renowned Shiwaku Navy—an elite group of sailors known for their exceptional navigation skills and vital role in maintaining maritime routes through the Seto Inland Sea. A visit to the Shiwaku Kinbansho, the island’s preserved former government office, offers a glimpse into this storied past. Here, visitors can view historical artifacts, including the original logbook of the Kanrin Maru, one of Japan’s first Western-style ships—highlighting the island’s importance in early naval modernization.

Beyond its naval legacy, Honjima retains much of its Edo-period charm. The Kasashima district, with its narrow stone-paved alleys and beautifully preserved wooden townhouses, offers an authentic glimpse into life centuries ago. A short hike leads to the Kasashima Castle ruins, which—though now enveloped by forest—still provide atmospheric views and insight into the island’s strategic past. Visitors can also explore Meotogura, a unique Edo-era warehouse symbolizing Honjima’s historical prosperity. Today, the island continues to blend history with creativity as a venue for the Setouchi Triennale, a contemporary art festival featuring permanent installations that infuse modern artistry into the island’s rustic charm—making Honjima a compelling destination for both history lovers and art enthusiasts.