Yokosuka: Guided Island Tour to Sarushimas Forgotten Fort

If you’re looking for a unique escape that blends history, natural beauty, and a sense of adventure, the Yokosuka Guided Island Tour to Sarushima offers just that. This experience takes you away from the crowds and into the quiet, moss-covered ruins of Japan’s only natural island in Tokyo Bay—an uninhabited spot filled with stories of military secrets and lush scenery.

What makes this tour stand out? First, the short ferry ride provides stunning views as you leave the city behind. Second, the guided exploration through tunnels, artillery platforms, and stone walls offers an intimate look into Japan’s military past. And third, the peaceful, untouched atmosphere makes you feel like a character in a Studio Ghibli film—minus the animation.

One thing to keep in mind is that this experience is quite focused on exploration and history; there’s no included food or drinks, so bringing a snack might be wise. Overall, it’s ideal for travelers craving authentic, off-the-beaten-path discoveries—especially those who love nature, history, and a bit of mystery.

Good To Know

• Exclusive Guided Experience: Access hidden tunnels, chambers, and military ruins with a knowledgeable guide.
• Stunning Ferry Ride: Enjoy picturesque views crossing Tokyo Bay to Japan’s only natural island.
• Unspoiled Environment: No cars, crowds, or commercialization—just pure, overgrown ruins and natural beauty.
• Rich Historical Context: From samurai-era defenses to Meiji-era military secrets, the tour offers depth.
• Ideal for Adventure Seekers: Perfect for travelers who want to venture beyond typical tourist spots.
• Limited Food Options: Remember to bring your own snacks as food is not included.

👉 See our pick of the 3 Best Workshops And Classes In Kanagawa Prefecture

An In-Depth Look at the Sarushima Tour

The Journey Begins: Ferry Ride from Yokosuka

Your adventure kicks off at Mikasa Pier, where a quick, approximately 10-minute ferry ride whisks you away from the bustling city and into a tranquil scene. As the ferry cuts through the calm waters of Tokyo Bay, you’ll notice the urban landscape softly fading in the distance, replaced by an expansive view of open sea and the lush greenery of Sarushima.

Travelers often mention how this ferry ride is more than just transportation; it’s part of the experience. The gentle swaying and panoramic views set a peaceful tone for what’s to come. The ferry fare is included in the tour, which simplifies logistics and makes the experience feel more seamless.

Arriving at Japan’s Only Natural Island

Once on Sarushima, your senses are met with an untouched environment that transports you back in time. The island’s dense foliage covers former military installations, silent stone walls, and moss-laden ruins. It’s easy to see why many visitors compare the scenery to a scene from a Ghibli film—quiet, overgrown, and filled with an air of mystery.

The fact that Sarushima is uninhabited today means no modern buildings or cars interrupt the landscape. This absence of urban development amplifies the feeling of discovery, allowing you to wander freely along forest trails, exploring the remnants of a once-military stronghold.

Guided Exploration of Hidden Tunnels and Ruins

What truly distinguishes this tour is the guided access to places most visitors wouldn’t find on their own. Your guide will lead you through hidden chambers, tunnels, and artillery platforms, bringing history alive with stories and insights.

One reviewer, Valentina, shared how having a local guide knowledgeable about military history enriched her experience. She appreciated the opportunity to learn about the island’s strategic importance and military secrets during the Meiji era. This detailed perspective turns a simple walk into a meaningful history lesson.

The tunnels, constructed from red bricks, are particularly evocative—small, cool spaces that hint at the island’s military past. Climbing atop artillery platforms offers sweeping views of the bay, perfect for photo opportunities.

The Atmosphere and Views

Expect to spend about an hour and a half exploring the island, walking along forest trails, gazing out at the sea, and discovering the ruins. The silence is profound, broken only by bird calls and the occasional ripple of water. Many visitors find this serenity restorative, especially after the hectic pace of city life.

According to reviews, the views at the highest points of the island are especially striking. You’ll see the wide expanse of Tokyo Bay, with ships passing quietly in the distance, adding to the sense of being in a forgotten corner of Japan.

Practicalities and Tips

Since no food or drinks are included, bringing water and snacks is recommended, particularly if you’re visiting on a hot day. The tour’s small-group format makes it easier to ask questions and move at your own pace, which is a bonus for those wanting a personalized experience.

The tour is suitable for most travelers, with most being able to participate comfortably. The one-and-a-half-hour duration is perfect for a half-day outing, and the private tour setup ensures your group enjoys a tailored experience.

Why We Think This Tour Offers Great Value

At $126.05 per person, this experience provides a well-rounded mix of transportation, expert guidance, and insider access to hidden historical sites. The value lies in the exclusive nature of the tour—access to tunnels and ruins most visitors miss—and the chance to learn about Japan’s military history through the eyes of a local guide.

The focus on preservation and natural beauty means you’re not fighting crowds, and the scenery feels authentically untouched. It’s a rare opportunity to step back from modern Japan and experience its past in a relaxed, immersive way.

The Authentic Touch

The tour’s reviews highlight how much genuine insight the guides provide. Valentina appreciated her guide’s knowledge, and many mention how the pictures taken during the tour make fantastic keepsakes. The quiet, overgrown ruins offer lots of photo-worthy moments, from moss-covered walls to sweeping sea vistas.

Accessibility and Convenience

Starting at a centrally located meeting point in Yokosuka, the tour is easy to access, especially for travelers staying nearby or arriving via public transportation. The round-trip ferry ride is included in the price, simplifying logistics and adding to the overall value.

Potential Drawbacks

While the experience is highly praised, it’s worth noting that the tour involves walking on uneven terrain, trails, and through tunnels, which might not be suitable for everyone. Also, the lack of food options means you should plan accordingly.

Who Is This Tour Best Suited For?

If you love history, nature, and discovering lesser-known spots, this tour checks all those boxes. It’s ideal for travelers seeking a peaceful, authentic experience away from crowded tourist routes.

Those interested in military history or cool, overgrown ruins will find this especially appealing. The tour’s private format makes it suitable for small groups, couples, or solo adventurers who want a more personalized touch.

It’s also perfect if you enjoy photography, as the island’s scenery offers many picturesque moments. But if you prefer a fast-paced, info-heavy museum experience, this might not be your best fit.

FAQs

Is the ferry ride included in the tour price?
Yes, the round-trip ferry fare is included in the $126.05 cost.

How long does the tour last?
Expect approximately 1 hour and 30 minutes to explore the island with your guide.

Can I bring food or drinks on the tour?
Food and drinks are not included, so bringing snacks or water is recommended.

Is the tour suitable for children or elderly travelers?
Most travelers can participate, but keep in mind the walking on trails and tunnels. Elderly or those with mobility issues should consider this.

Where does the tour start and end?
It starts at Togo Heihachiro in Yokosuka, and the activity finishes back at the same meeting point.

Is this a private tour?
Yes, it’s a private experience exclusive to your group, allowing for flexibility and personal attention.

What should I wear?
Comfortable shoes suitable for walking on uneven terrain and casual outdoor clothing are best.

Are there any restrictions or requirements?
Confirmation of booking is received at the time of reservation; most travelers are eligible to participate.

Can I cancel the tour?
Yes, free cancellation is available if you cancel at least 24 hours in advance for a full refund.

Final Thoughts

This guided tour of Sarushima offers a rare glimpse into Japan’s military past, combined with stunning views and a peaceful environment that feels worlds away from the city. It’s especially suited for curious travelers who want to explore uninhabited, historical sites with a knowledgeable guide to bring the stories to life.

The short ferry ride sets the tone for a memorable adventure, and the exploration of hidden tunnels and ruins offers a tangible connection to Japanese history. With its quiet, natural setting and exclusive access, this experience delivers both education and tranquility—perfect for those craving an authentic, offbeat journey.

If you’re after a meaningful, scenic escape from the hustle, this tour is well worth considering—just remember to bring your camera and a sense of curiosity.