Imagine stepping into a quiet, moss-laden world where history meets nature in a way that feels like stepping into a Studio Ghibli film. That’s what you get with this guided tour from Yokosuka to Sarushima, Japan’s only natural island in Tokyo Bay. For just $65 per person, you’ll spend about half a day exploring ruins, tunnels, and overgrown stairways, all while learning about the island’s fascinating past from a knowledgeable local guide.
Two things we love about this experience are the stunning views over Tokyo Bay and the chance to walk through what looks like an abandoned fortress straight out of a fantasy movie. The mossy remnants of old military installations and the quiet, unspoiled scenery make this a truly photogenic adventure. One possible consideration is that since the island is uninhabited and largely untouched, there’s no on-site cafe or amenities—so pack water and snacks if you’re hungry.
This tour suits history buffs, photographers, and nature lovers looking for a peaceful escape from the city’s hustle. If you’re curious about Japan’s coastal defenses or just want some memorable scenery, this guided trip offers a perfect mix of education and tranquility.
Key Points
Stunning scenery: Expect breathtaking ocean views and moss-covered ruins that feel like stepping into a storybook.
Historical insights: Your guide will explain Sarushima’s role from Edo-period coastal defenses to modern military use.
Accessible adventure: Round-trip ferry, guided exploration, and manageable walking make this suitable for most ages and fitness levels.
Photo opportunities: Every corner offers a chance for great shots—be prepared with your camera or smartphone.
Unspoiled environment: The island is uninhabited, so you’ll experience peaceful, crowd-free nature.
Value for money: For $65, the tour includes ferry fare, guidance, and access to hidden chambers, making it a worthwhile cultural outing.
Exploring the Details: Why This Tour Stands Out
Our experience with this tour revealed a perfect balance of history, nature, and fun. The ferry ride alone sets the tone—it’s quick, scenic, and offers a fresh perspective of Yokosuka’s coast. We loved the way the guide, though unnamed, shared stories about Sarushima’s past, giving the ruins context and life that you might miss exploring alone. The narrative about the island’s transformation from a military fortress to a peaceful relic adds depth to what might otherwise be just old stones and tunnels.
The abandoned gun batteries, tunnels, and observation posts are the main attractions. Many travelers describe Sarushima as “Japans Laputa,” a title that fits well—overgrown stone stairs, rusted metal, and tunnels echoing with history give it a mysterious, almost magical atmosphere. Though the ruins are a bit rough and uneven, we found the walk manageable and rewarding, especially when we reached lookout points with sweeping views over Tokyo Bay.
One of the highlights is exploring the red-brick tunnels and chambers. The guide points out details like where soldiers once operated cannons or kept watch, transforming the ruins into a storyteller of sorts. Several reviewers noted how these hidden chambers felt like secret passageways from a storybook, making it a memorable photo spot.
However, the island is uninhabited and has no cafes or facilities, which is worth considering if you prefer amenities on your outings. We recommend bringing water and perhaps a snack, especially if you plan on spending extra time wandering the jungle paths or sitting on the rocks enjoying the view.
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The Itinerary and What You’ll Experience
The tour kicks off with a short ferry ride from Yokosuka, with the boat departing from a designated meeting point in front of the Heihachiro Togo statue. This meeting spot is easy to find, marked by the yellow sign held by your guide. The ferry itself is quick but scenic, giving you a sneak peek of the coastal landscape you’ll explore later.
Once on Sarushima, your guide leads you along well-chosen paths that reveal various remnants of the island’s military past. Expect to see coastal gun batteries, overgrown stone walls, and tunnels, many of which have been reclaimed by nature. The guide will explain how Sarushima served as a defensive point for Tokyo Bay during the Edo period and later during Japan’s modernization in the Meiji era.
A significant part of the tour involves exploring the tunnels and chambers. These are often narrow and echoing, so comfortable shoes are a must. Some visitors describe wandering through “moss-covered tunnels that feel like stepping into a fantasy world,” which is exactly the kind of detail that makes this experience special.
Throughout the walk, there are plenty of photo-worthy spots—cliffs overlooking the bay, the ruins amid greenery, or close-ups of rusted military equipment. We loved pausing at viewpoints that offered sweeping vistas of Tokyo Bay, perfect for a quick snapshot or a quiet moment of reflection.
The tour lasts roughly 3-4 hours, including the ferry rides and exploration time, making it a perfect half-day outing that won’t wear you out. The group size is generally small, allowing for personalized attention and plenty of time for questions.
Authentic Experiences & Practical Tips

Travelers have shared that the guides are knowledgeable and friendly, making the history come alive. Many mention how the stories helped them appreciate the island’s strategic importance and its transition into a peaceful retreat. One reviewer said, “Our guide’s passion for the island’s history made the ruins feel like they had stories to tell.”
Since the island is uninhabited with no shops or amenities, packing a light snack and water is advisable. Wear comfortable shoes—the terrain is uneven, and some paths include stairs and rocky surfaces. Bringing a camera or smartphone is also recommended, as every turn offers a new picturesque scene.
The tour is particularly suitable for history enthusiasts, nature lovers, and photographers, but it’s also great for families with kids who enjoy exploring outdoors and discovering history firsthand. The quiet, crowd-free environment makes for a relaxed and focused experience.
Our Final Thoughts: Who Should Join This Tour?

This guided trip to Sarushima offers excellent value, especially considering the ferry fare, guiding, and access to hidden parts of the island included in the price. It’s a fantastic way to escape the city’s noise and step into a quiet, scenic landscape filled with stories from Japan’s military past.
If you enjoy exploring historical sites in nature, taking photos of dramatic coastlines and ruins, or simply want a peaceful day outdoors, this tour hits all those marks. It’s ideal for travelers interested in authentic, off-the-beaten-path experiences, and those who appreciate a good story told along the way.
The combination of scenic beauty, fascinating history, and budget-friendly price makes this a compelling choice for a half-day adventure. Just be prepared for uneven terrain and a bit of walking—your reward will be a memorable, photo-worthy slice of Japan’s coastal history.
More Great Tours NearbyFAQs
How long does the entire tour last?
The tour, including ferry rides and exploration, lasts about 3 to 4 hours, making it a perfect half-day outing.
Is the ferry ride included in the price?
Yes, the round-trip ferry fare is included in the $65 ticket, along with the guided tour.
Do I need to bring my own food or drinks?
The tour does not include food or drinks, so bringing water and a snack is recommended since there are no amenities on the island.
Is there a group size limit?
While not explicitly stated, the tour typically involves a small group, allowing for personalized guidance and questions.
Is the terrain difficult?
Some paths involve uneven ground, stairs, and rocky surfaces, so comfortable shoes are essential. The walk is manageable for most, but be mindful of your comfort level.
Can I book this tour with flexible payment options?
Yes, you can reserve your spot now and pay later, giving you flexibility in planning your trip.
This guided tour to Sarushima combines history, nature, and scenic beauty at a fair price. Whether you’re a history buff, photographer, or just seeking a peaceful coastal walk, it’s a memorable way to experience a quiet corner of Japan’s coastline.
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