
Guide
Tsunoshima is an island located in the Toyohoku district of Shimonoseki, Yamaguchi Prefecture, floating in the Sea of Japan (Hibiki-nada Sea). Its name is derived from its shape, which resembles a bull's horn. The most striking feature is the Tsunoshima Ohashi Bridge, completed in 2000, which spans 1,780 meters. As one of the longer bridges connecting an island to the mainland, it offers a spectacular view of the contrast between the emerald green sea and the bright blue sky. The area is part of the Kitachimon Coast Quasi-National Park, ensuring a beautifully preserved natural environment.
The island has a long history of human settlement. Its name appears in the ancient Manyoshu poetry, and historical records from the Engi era mention the tribute of seaweed from the Nagato Province. In more recent history, the island served as part of the Shimonoseki Fortress zone. During the pre-war era, the Tsunoshima Battery was established in the Motoyama settlement on the eastern side of the island. Construction of this battery began in 1939, and it was equipped with four Type 89 15cm cannons. Today, the remains of the battery and ammunition depots serve as historical sites that tell the story of Japan's former coastal defense systems.

The symbol of Tsunoshima is the Tsunoshima Lighthouse standing at Yumegasaki in the northwest. Designed by the British-born architect Richard Henry Brunton, who is famous for designing many lighthouses, it became the first Western-style lighthouse on the Sea of Japan coast in 1876. Standing 43 meters tall, it is a first-class lighthouse equipped with a massive Fresnel lens. The Tsunoshima Ohashi Bridge is also a major highlight; driving across the bridge is a world-class experience, and the panoramic views from the bridge are highly celebrated. Additionally, the nearby battery ruins and ammunition depots add a layer of historical depth to the scenic landscape.
Tsunoshima can be visited year-round, but it is highly recommended to visit during the daytime on clear, sunny days when the sea appears most vibrant. The emerald green color of the water is most vivid when the sun reflects directly off the surface. Between March and September, the contrast between the blue sky and the sea is particularly striking. During sunset, the changing colors of the sky create a dramatic silhouette of the lighthouse and the bridge, offering a completely different atmosphere.

The primary way to experience Tsunoshima is through a scenic drive. Traveling by car is the standard way to cross the Tsunoshima Ohasi Bridge and explore the island. For a taste of local life, visit "Shiokaze no Sato Tsunoshima" (the Tsunoshima Fishery Cooperative Market). Here, you can purchase fresh local seafood and traditional seaweed products. For history enthusiasts, exploring the structural remains of the coastal batteries and the lighthouse provides a fascinating glimpse into the past.
Tsunoshima is located at the northwestern edge of Yamaguchi Prefecture, surrounded by the rich natural beauty of the Kitachimon Coast Quasi-National Park. It is common to include this area in a travel itinerary that visits other attractions in Shimonoseki or the coastal routes of the Nagato area. The entire region is well-maintained as a scenic driving route.

As Tsunoshima is centered around outdoor natural environments, comfortable walking shoes and clothing are recommended. Please be mindful of the terrain when walking near the lighthouse or battery ruins. Most visitors will rely on cars to move around the area. While some local shops may have limited English-speaking staff, you can use maps and photos for guidance. Please respect the natural environment by following local rules and ensuring you take all trash with you. For the best experience, prepare for sun exposure during your outdoor strolls.