【Adult Adventure】Just 10 minutes by ferry from Yokosuka! We enjoyed the uninhabited island "Saru Island" in Tokyo Bay

Surprisingly little is known about Saru Island, which floats in Tokyo Bay. We explored the untouched nature and fortress ruins of this easily accessible uninhabited island. It's a place that satisfies the adventurous spirit.

Surprisingly close, the uninhabited island Sarushima can be accessed by ferry from Yokosuka

It is the only natural island in Tokyo Bay and has a history of being used as a fortress to protect Tokyo Bay. Currently, it has been developed as a park and has become a popular tourist spot in the surrounding area of Yokosuka, Kanagawa Prefecture, where the ferry "NEW KUROFUNE" to Sarushima departs and arrives.

The ferry to Sarushima from Mikasa Terminal in Yokosuka was bustling with many tourists due to the high season. I was worried whether everyone could board, but there were extra trips that day, allowing for a smooth boarding process. Normally, there is about one ferry every hour, so it might be wise to check the schedule in advance.

After about 10 minutes of departure, we arrived at Sarushima in no time

After about 10 minutes on the ferry, we arrived in no time. The sign at the pier reads "SARUSHIMA Adventure Island," and my heart leaps at the adventure that is about to begin. Tours seem to be available, but I decided to explore on my own at my own pace. According to the official website, even a leisurely stroll can be done in about an hour.

Sarushima
(Mikasa Terminal, Sarushima Visitor Center)
Approximately a 15-minute walk from "Yokosuka Chuo Station" on the Keikyu Line
Mikasa Park Parking Lot
Car navigation input address: 27-10 Ogawacho, Yokosuka City
Entrance fee to Sarushima Park and round-trip ferry fare: Adult 2000 yen, Junior high school student 1750 yen, Elementary school student 1000 yen

Feeling the coolness of nature, I walked past the brick historical buildings

Upon arrival, the rich nature that spread out was incomparable to the city of Yokosuka where I was before boarding the ferry. It seems this is influenced by the fact that access was prohibited until the end of the war. The sidewalks were nicely maintained, allowing for smooth walking. Thanks to the shade from the sunlight, it was cool and comfortable even in the middle of summer.

As I walked casually, I noticed that the wall beside the sidewalk was made of brick. Upon closer inspection, it appeared to be the buildings of barracks and ammunition depots. Covered in moss, with trees growing on the roof, one can feel the history etched over many years.

And the picture above shows the brick tunnel that boasts a length of 90 meters. This valuable structure employs architectural techniques that can only be seen in places like the Tomioka Silk Mill, and it is built so robustly that it doesn't give off an ancient feel, overwhelming me with its technical prowess. The interior of the tunnel is dark, and being close to nature, it is also known as the "Tunnel of Love."

One of the most lively spots on Sarushima was this one (image above). It seems to be gaining attention on social media for its ancient ruins-like atmosphere, resembling Studio Ghibli's "Castle in the Sky."

While strolling, I discovered an open square. There was nothing to obstruct the view, and a breathtaking scenery unfolded before me. The wind was also pleasant, so I sat on a rock and took a short break. Thanks to this view and the breeze, I felt completely refreshed.

The sea around Sarushima is highly transparent, and I heard that in the past, swimming was also enjoyable, but due to changes in the shape of the beach, it seems that it can't be used for a while. Although swimming is not possible, you can fully enjoy coastal leisure activities like watching the sea up close, searching for seashells, and enjoying BBQ (※) rentals.
※ "Sarushima BBQ" operates year-round while the ferry route is in service.

The adventurous Sarushima refreshes the soul.

There were many people waiting for the ferry on the boat deck. Since there was a takeout restaurant nearby, I bought some drinks and snacks to take a breather.

The announcement informed us of the departure time, so I headed to the pier. After thoroughly enjoying the attractions of Sarushima, I returned home on the ferry. Sarushima has many spots that excite adults, such as beautiful nature and buildings that have stood the test of time. It is easily accessible from the Tokyo vicinity and can be thoroughly enjoyed as a day trip. Be sure to visit at least once on your day off!

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