A Mysterious Blend of History and Nature Just a Day Trip from Osaka
For those seeking a quick escape into nature with a touch of adventure, Tomogashima is the perfect destination. Floating off the coast of Kada in Wakayama Prefecture, this group of uninhabited islands is steeped in both history and natural beauty—an unforgettable place where the past and the present intertwine.
A Glimpse into Tomogashima’s Hidden Past
Tomogashima refers collectively to four islands in the Kitan Strait: Okinoshima, Jinoshima, Torajima, and Kamishima. The main island, Okinoshima, is where most visitors spend their time.
Once a strictly off-limits military base, the island was home to Japan’s coastal defense fortifications from the Meiji era through the end of World War II. Due to its strategic position between the Kii Peninsula and Awaji Island—key for protecting Osaka Bay—Tomogashima was part of a military line known as the Yura Fortress.
Following the war, the islands were abandoned, eventually becoming uninhabited. In recent years, however, they’ve attracted attention on social media as “Laputa Island,” with visitors flocking to explore the ruins and scenic beauty reminiscent of Studio Ghibli’s Castle in the Sky.
The Allure of Tomogashima
What makes Tomogashima so enchanting? First and foremost, its dreamlike landscape. Moss-covered red brick ruins of gun batteries and ammunition depots are hidden deep within the forest, creating a surreal, almost otherworldly atmosphere. The decaying architecture, reclaimed by nature, feels like something out of a fantasy film—and in fact, it’s said that director Hayao Miyazaki drew inspiration from this very island when imagining the floating city of Laputa.
Every path offers a view worthy of a photo, making it a paradise for hikers, photographers, and Ghibli fans alike.
Nature lovers will also find plenty to enjoy. The island is home to wild deer and birds, with forest trails perfect for hiking and a lighthouse that offers breathtaking ocean views. It’s a peaceful escape that immerses you in both greenery and sea breeze.
And best of all? It’s surprisingly accessible. Despite being an uninhabited island, Tomogashima is easily reachable from Osaka in just a few hours, making it an ideal day trip that still feels like a true adventure.
How to Get There
- Take the Nankai Line to Wakayama City Station or to the end of the Kada Line at Kada Station.
- From there, make your way to Kada Port (by foot or local bus).
- A ferry from Kada Port takes around 20 minutes to reach Tomogashima.
⚠️ Ferries may be canceled in case of bad weather, so be sure to check the official website or social media for the latest information before your trip.
Important Tips Before You Go
- Bring your own food and drinks. There are no vending machines or shops on the island.
- Plan your bathroom breaks. There are a few toilets, but it’s helpful to know where they are in advance.
- Wear appropriate clothing. Since most of the island is accessible via hiking trails, comfortable shoes and outdoor-friendly clothes are a must.
Whether you’re a history buff, a Ghibli enthusiast, or simply looking for a peaceful escape from the city, Tomogashima offers an unforgettable journey into the heart of Japan’s lesser-known wonders. Step onto the ferry, and let this mysterious island take you on a magical day trip back in time.