Sarushima Island
In Japanese: 猿島

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
- Memorial Ship Mikasa ≈ 15 min by car
- Shomyoji Temple (Kanazawa, Yokohama) ≈ 45 min by car
- Hokokuji Temple (Bamboo Garden) ≈ 55 min by car
- Tsurugaoka Hachimangu Shrine ≈ 1 h by car
- Mt. Kano: Kujukutani Observation Park ≈ 1 h by car
Travel times are rough estimates by car.
- 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 Report outdated info