Wayfinder Atlas

Sarushima Island

In Japanese: 猿島
Sarushima Island
Photo: horschmology / CC BY 2.0, resized

The only natural island in Tokyo Bay, once a fortress. Brick tunnels, barracks and gun emplacements stand among the woods, a 10-minute boat ride from Yokosuka.

National Historic Site (Tokyo Bay fortress remains)

Nearby

Travel times are rough estimates by car.

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Getting there
15 min walk from Yokosuka-Chuo Sta. (Keikyu) to Mikasa pier, then boat about 10 min
Fee
2,500 yen incl. return boat and park entry (adults)
Good to know
Boats run daily but are cancelled in rough weather; last boat back 16:00 in winter
Time needed
2 h

Checked against the official Japanese website on 2026-10-12. Report outdated info