Explore brick fortress ruins on an uninhabited island, just a 10-minute ferry ride away
About this spot
Tokyo Bay's only natural island preserves the remains of an old military fortress, perfect for adventure seekers. Brick tunnels built in the French style and gun emplacements are wrapped in deep greenery, as if stepping into a storybook world. You can also enjoy beach exploration and fishing on the sandy shore, offering unforgettable experiences for adventure-loving children. Bringing a bento lunch for a meal on the island is also recommended.
Tips
Some areas of the island have little shade, so bring plenty of water and hats. The tunnels are dimly lit; a small flashlight adds to the adventure atmosphere.
Best time to visit
Allow 2-2.5 hours; early afternoon departures typically have more availability
Access & map
〒238-0019 Kanagawa Prefecture, Yokosuka City, Sarushima
Model course featuring this spot
Yokosuka: Naval Port and Sarushima Island Exploration
Kanagawa
Explore features & model courses
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