Sarushima is an uninhabited island in Tokyo Bay, known for its red-brick fortifications built from the late Edo period through the Meiji and Showa eras. The island is rich in nature, and in summer visitors can enjoy barbecues, rock-pooling, and leisurely walks. Throughout the year, the changing greenery and views of the sea add to its charm. A short ferry ride of about 10 minutes from Mikasa Pier takes you to the island, where you can experience both its history and natural beauty up close.
From Abekura Onsen, it is an easy drive to Yokosuka Port (Mikasa Pier), making Sarushima a convenient side trip before or after your hot spring visit. Take a break from everyday life and enjoy a relaxing time surrounded by the sea and greenery.