Gunkanjima (Battleship Island)
Nagasaki · Nagasaki City
32.6278°N, 129.7383°E
Hashima Island, universally known as Gunkanjima (Battleship Island) for its silhouette resembling a warship, is a 6.3-hectare concrete fortress that once housed 5,259 people — the highest population density ever recorded on Earth. From 1887 to 1974, the island was an undersea coal mining facility operated by Mitsubishi. When the coal reserves depleted, the entire population evacuated in a single day, leaving the concrete apartment blocks, schools, hospitals, and entertainment halls to 50 years of typhoons and salt corrosion.
The island is now a UNESCO World Heritage Site and accessible only by authorized tour boat. The permitted landing area is a small section of the southern concrete seawall; the rest of the island is off-limits due to structural instability. What visitors see from the designated viewing platform — rows of skeletal concrete towers, stairways to nowhere, and the collapsed dome of the central meeting hall — is among the most dystopian landscapes accessible in Japan.
Essential Information
Opening Hours
Tour boats: typically depart at 9:00 AM and afternoon slots daily (check operator schedules)
Closed: Tours canceled in rough seas (common October–March) | No fixed closing day otherwise
Entrance Fee
¥4,000–5,000 per person (tour boat + landing fee, advance booking required) | Gunkanjima Digital Museum alternative: ¥1,800
Best Season
April–September for highest island landing success rate | Morning departures (9:00 AM) for calmest seas
Visit Duration
2.5–3 hours total tour (including 30-minute island landing when conditions permit)
Getting There
Access Information
Insider Guide
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