Audio Guide of the Sea Wall

It can only be accessed through guided boat tours from Nagasaki. Schedules vary depending on the season and weather conditions, but they usually depart between 9:00 and 13:00. We recommend booking in advance through authorized operators such as Gunkanjima Concierge.

Tours cost between ¥4,200 and ¥4,600 (about $30–35 USD). They include the boat and a guide in Japanese/English. Tickets can be purchased online on official sites such as Nagasaki Tabinet, where you can also check weather-related cancellations.

The full excursion lasts 2.5–3 hours: 50 minutes by boat and 1 hour on the island (time on land is strictly limited for safety reasons). The wall is part of the 45-minute guided route.

This concrete wall (1897) protected the undersea coal mine from typhoons. Hashima, designated a UNESCO World Heritage Site in 2015, symbolizes Japan’s Industrial Revolution. It appears in the film Skyfall and is known as Gunkanjima (Battleship Island).

From March to May and September to November, when there is less rain and gentler waves. Avoid June–July (rainy season) and August (extreme heat). Tours only operate when waves are below 0.5 m; check JNTO for forecasts.

It is not adapted: there are steep stairs, uneven ground, and crumbling areas. Visitors must be able to walk unaided for 60 minutes. Operators such as Gunkanjima Tour recommend checking in advance if you have physical limitations.

In Nagasaki: Peace Park (15 minutes from the pier), the Atomic Bomb Museum, the Dutch district of Dejima, and Mount Inasa. On the boat route, you will pass the Mitsubishi shipyards (industrial heritage). More information at Nagasaki Tourism.

Non-slip footwear (sandals are prohibited), sun protection, a hat, and water (there are no services on the island). You may only photograph authorized areas. Arrive 30 minutes early at Tokiwa Pier (Nagasaki) for check-in.