It’s not famous, it’s not crowded, and that’s exactly why it works. If you like Japan with a slower pulse, this is my absolute hidden gem!
A secret island 3 hours from Tokyo that still feels underrated
Picture this: you leave the noise of Tokyo behind, ride a combination of train and ferry, and a few hours later you’re on an island where the pace drops so fast it feels almost unreal. That’s the charm of Oshima, part of the Izu Islands, about 120 kilometres south of Tokyo by sea. It’s close enough for a weekend, but far enough to feel like you’ve slipped into a different Japan.
What many overlook is that most travellers heading out of Tokyo stop at the same big-name day trips, while islands like Oshima stay quietly under the radar. Hand on heart, that’s exactly why I like it. You get black lava cliffs, wild coastal roads, volcanic scenery, and very few people shouting for the perfect photo spot. My tip: if you want a Japan experience that doesn’t feel packaged, put this island on your list. Personally...
How to get there from Tokyo without making it complicated
Ever wondered why some of the best Japanese getaways still feel so easy to miss? Take Oshima, for instance. From Tokyo, you can reach it in roughly 3 hours, depending on your route and connections, and that includes the ferry from Takeshiba Pier in central Tokyo.
Train, ferry, then island air
The usual route starts at Hamamatsucho Station, then a short walk to Takeshiba Pier, where Tokai Kisen runs ferries to Oshima. The fastest high-speed boat can get you there in around 1 hour and 45 minutes on direct services, while the slower overnight or longer ferry options take more time. Either way, the journey itself is part of the experience, and if you’re learning Japanese, it’s a great chance to hear practical words like お客様 (okyakusama, customer), 海鮮 (kaisen, seafood), and 船 (fune, boat) in real life. Sounds odd, but it’s true.
Once you land, the island doesn’t ask you to rush. Buses connect the port to the main sights, but renting a bicycle or scooter gives you much more freedom. What I especially like is that you don’t need a packed itinerary here. A day of riding, looking out at the ocean, and stopping for local snacks can be enough. But that’s not all.
Why this unknown island feels like a better Japan story
Let’s be honest: a lot of Japan travel content focuses on Tokyo, Kyoto, Osaka, and maybe a few obvious day trips. That’s useful, sure, but it can make the country feel smaller than it is. Oshima reminds you that Japan is also made up of places where the landscape, local life, and sea breeze do most of the talking.
I still remember exactly how strong the contrast felt after a few weeks in Japan. One minute you’re in a city packed with neon, vending machines, and station announcements, the next you’re standing near Mount Mihara, a volcano that last erupted in 1986, with nothing but wind and open sky around you. Classic Japan, isn’t it? The island’s volcanic soil, rough coastline, and old fishing villages give it a completely different mood from mainland sightseeing.
What to do on Oshima
Quick detour: if you like scenery, go to Mount Mihara first. The crater area is dramatic, and on a clear day the views stretch far across the Izu chain. If you prefer something gentler, Masaki Road and the camellia-covered parts of the island are lovely in winter and early spring, when 椿 (tsubaki, camellia) flowers bloom.
Then there’s the food. Try 海鮮丼 (kaisendon, seafood rice bowl) if you find a good local shop, and look for ashinoko, a local version of a fish broth dish, or other simple island meals that don’t try too hard. That’s the point. The flavours are straightforward, fresh, and tied to the sea. Personally, I’d rather eat a humble bowl on an island like this than queue for something trendy in central Tokyo.
A 5-week Japan experience changes what you notice
The first time I went to Japan, I kept chasing famous sights. After 5 weeks, that changed. You start noticing the places between the big landmarks, the kind of spots that locals use for weekend breaks and that foreign visitors often skip completely. Oshima fits that category perfectly.
By the way, if you’re a Japanese learner, trips like this are gold. Small conversations on a ferry, a menu with simple 漢字 (kanji, kanji / Chinese characters), a station sign you can actually read, all of it turns travel into practice. Even basic phrases like お願いします (onegaishimasu, please), ありがとう (arigato, thank you), and sumimasen feel more natural when you need them at the ticket counter or in a tiny ryokan. That’s the kind of learning that sticks.
What I especially like is the balance. You get adventure, but not chaos. You get a remote island feeling, but not total isolation. And because Oshima is still relatively unknown outside Japan, it keeps that insider character that makes a trip feel personal instead of copied from everyone else’s itinerary. My verdict: if you want a secret island 3 hours from Tokyo, this one deserves more attention than it gets. Personally...
Frequently Asked Questions
How far is the island from Tokyo?
About 3 hours, depending on your ferry type and connection times.
Is it suitable for a day trip?
Yes, but an overnight stay gives you a much better experience.
Why do Japan fans like it so much?
Because it feels quiet, local, and far less touristy than the big-name destinations.
