One of Hokkaido's 14 regions
Oshima渡島
Hakodate's night view, castle towns and the shinkansen gateway.
Oshima is Hokkaido's historic south — the first part of the island to open to the outside world. Hakodate wears that history beautifully: Motomachi's churches and slopes, red-brick warehouses on the bay, a morning market that justifies the trip alone, and the celebrated night view from Mt. Hakodate.
Beyond the city, Edo-era Japan lingers at Matsumae, the island's only castle town, and Onuma's island-dotted lakes sit beneath the elegant cone of Mt. Komagatake. Since the shinkansen reached Shin-Hakodate-Hokuto, this is where many Hokkaido journeys now begin.
🧭 The Hokkaido Shinkansen arrives at Shin-Hakodate-Hokuto; Hakodate also has its own airport with Tokyo flights.
Oshima highlights
Mt. Hakodate night view
The two-sea sparkle regularly ranked among Japan's best night views.
Hakodate morning market
Seafood bowls at dawn, steps from the station — worth the shinkansen ride alone.
Matsumae castle town
Hokkaido's only Edo-era castle town, famous for spring cherry blossoms.
Onuma & Mt. Komagatake
Island-dotted lakes under a strikingly shaped volcano, 30 minutes from Hakodate.
The 11 towns of Oshima
Click a town to jump to its entry
Hakodate函館市
A port town of slopes, red-brick warehouses and a night view regularly ranked among Japan's best. The morning seafood market alone justifies the shinkansen ride.
Hakodate town page →Hokuto北斗市
Hokuto is where the shinkansen arrives in Hokkaido — with a silent Trappist monastery avenue and coastal fields facing Hakodate across the bay.
Hokuto town page →Matsumae松前町
Matsumae is Japan's northernmost castle town — 250 varieties of cherry trees bloom around the keep, and the local kelp-squid pickle bears its name.
Matsumae town page →Fukushima福島町
Fukushima town dries more surume squid than anywhere in Japan and raised two yokozuna — sumo pride runs deep on this strait-facing shore.
Fukushima town page →Shiriuchi知内町
Shiriuchi grows Hokkaido's famous thick garlic chives and farms oysters where the Tsugaru Strait current runs fast.
Shiriuchi town page →Kikonai木古内町
Kikonai greets the shinkansen at Hokkaido's first stop and purifies itself each January with an icy sea ritual centuries old.
Kikonai town page →Nanae七飯町
Nanae holds Onuma Quasi-National Park — islet-dotted lakes under Mt. Komagatake — and claims the birthplace of Western farming and the Danshaku potato.
Nanae town page →Shikabe鹿部町
Shikabe's geyser blows every ten minutes beside the fishing port — steam your own seafood at the roadside station's hot-spring kitchen.
Shikabe town page →Mori森町
Mori invented ikameshi — squid stuffed with rice, the king of station bento — beneath the sharp silhouette of Mt. Komagatake.
Mori town page →Yakumo八雲町
Yakumo is the only town in Japan facing two seas — Volcano Bay and the Japan Sea — and the birthplace of Hokkaido's carved wooden bears.
Yakumo town page →Oshamambe長万部町
Oshamambe means crab rice — the kanimeshi bento sold at its junction station since steam-train days — plus a storied radium hot spring in the hills.
Oshamambe town page →
Guides that cover Oshima
Suica and Kitaca in Hokkaido: top-ups, low balances and refunds
Using an IC card, adding money and getting a refund are different services. In Hokkaido, physical cards and phones may need different top-up equipment. Extra balance cannot make an out-of-area rail journey eligible for IC travel.
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Goryokaku Tower and Park: Tickets, 2027 Prices and Tram Access
Compare Goryokaku Tower with the free park, check the April 2027 admission change and plan tram access from Hakodate Station, moat opening hours and a winter walk.
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Where to Stay in Hakodate: Four Areas Compared
Compare Hakodate Station, Motomachi and the bay, Goryokaku and Yunokawa by transport, evening meals, slopes and the time you actually have.
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Christmas in Hokkaido 2026: Markets, Lights and a White Christmas
Plan Christmas in Hokkaido with Sapporo and Hakodate event dates, snow expectations and travel tips. Compare markets, illuminations and winter stays.
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First Snow in Hokkaido 2026: When Does It Start Snowing?
Compare average first-snow and lasting-snow dates across Hokkaido cities, with 2026 observations and practical advice for transport, clothing and ski plans.
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Hakodate in Winter 2026: Christmas Fantasy, Night View and Weather
Plan Hakodate in winter with Christmas Fantasy dates, weather, the night view and transport tips. Fit evening outings around your hotel and meals.
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More guides for this region (12)
- Hokkaido in Winter Without Skiing: Snow Play, Onsen & Routes
- Hokkaido in April: Weather, Clothes and a Flexible Route
- Mount Hakodate Night View: Access & Ropeway Closures
- Sapporo to Hakodate: Train, Bus or Car?
- Hokkaido Rail Pass 2026: Prices, Area Passes and When It Pays Off
- Hokkaido Winter Weather: Temperatures and Snow by Month, and What to Wear
- Hakodate Food Guide: Morning Market, Ramen & Burgers
- Getting Around Hokkaido: Car, JR, Buses and IC Cards
- Hokkaido Driving Times: How to Check Routes from Sapporo and New Chitose
- Best Places to Visit in Hokkaido: Cities, Nature and Onsen
- 5-Day Hokkaido Road Trip: Otaru, Lake Toya and Hakodate
- Hokkaido Food Guide: Regional Dishes and Where to Try Them