For 200 years, no one was allowed on this island. Then they put a sommelier on it.
Vallisaari sits 2.5 kilometres from Helsinki’s Market Square — close enough to see the city’s skyline, far enough to forget it exists. The Russian navy stored ammunition here from the 1810s. The Finnish military inherited the island after independence in 1917 and kept it locked. Civilians were banned. No exceptions. No visits. No footprints.
Then, in 2016, the gates opened. Helsinki discovered it had a secret island.
Quick Facts:
| Detail | Info |
|---|---|
| Ferry | 20 min from Market Square |
| Tasting | EUR 59, 5 wines |
| When | Fri & Sat, May–Sep |
| Capacity | ~100 seats |
| Island size | 30 hectares |
What Happens When an Island Is Sealed for 200 Years?
When humans leave, nature moves fast. Vallisaari’s 30 hectares became a biological experiment no scientist would have been allowed to design. Over 400 plant species colonised the island without a single landscaping decision. Butterflies — over 70 species documented — found habitats in the meadows that grew through cracked concrete. Bats moved into the Russian powder magazines. The forest swallowed the military roads.
The ruins are the best part. Brick-vaulted ammunition cellars with their roofs open to the sky, filled with ferns. Gun emplacements where wildflowers grow through the iron. A network of tunnels that the Russian navy carved into granite, now silent except for dripping water and the occasional bat. The 1906 ammunition explosion — which killed 17 soldiers and was heard across Helsinki — left scars still visible on the rock faces.
This is not a manicured park. The trails are uneven. The ruins have no guardrails. The island feels like something between an archaeological site and a nature reserve, which is exactly what it is.
What Actually Happens at an IISI Wine Tasting?
Oliver Laiho opened IISI on Vallisaari because he thought a military island with south-facing sea views deserved something other than abandonment. He was right.
Here is what happens. You take the JT-Line ferry from Market Square — 20 minutes across. The city shrinks behind you. You arrive at a dock where the only directions are “cafe: left” and “nature trails: right.” You go left.
IISI’s terrace faces south across the Baltic. A hundred seats. The sommelier has chosen six wines — a different theme each week. Piedmont one Saturday. Provence the next. Something volcanic from Etna. Something unexpected from the Douro. The sommelier goes table to table and tells you the story behind each bottle. Not tasting notes. Not scores. The story: who made it, why they made it that way, what they were trying to say. Between pours, the DJ plays something that shifts the room without demanding attention — deep house, Nordic jazz, funk that floats.
The tasting runs about 90 minutes. Afterwards, nobody leaves. The DJ keeps playing. The terrace becomes something between a wine bar and an evening that doesn’t want to end. In June, the light turns gold around 10 PM and stays that way until you miss the last ferry.
The details:
- When: Every Friday and Saturday, 13:00 and 17:00 sessions (May through September)
- Price: 59 EUR per person (5 wines + food pairings)
- Capacity: ~100 seats per session
- Booking: Required — sessions sell out, especially Saturdays. Book at iisivallisaari.fi/tapahtumat
- Language: The sommelier presents in Finnish and English
The Friday 13:00 session is the one fewer people know about. Same sommelier, same terrace, same wines. But a smaller crowd, more space, and the sommelier tells the extra stories — the ones about the producer’s grandfather, or the vineyard that almost didn’t survive the frost.
Saturdays sell out 1-2 weeks ahead. Fridays are quieter and — honestly — better.
What Else Can You Do on Vallisaari?
IISI isn’t just the wine. The calendar runs over 40 events from May through September, and every single one of them happens on an island you can only reach by boat.
Wine Dating (Thursdays, June-August): Thirty men, thirty women, wine as the conversation starter. The sommelier guides the evening. You will talk to strangers. The wine makes it easier.
DJ Sunset (Friday and Saturday evenings): Free entry. The DJ plays deep house and funk on the terrace as the light goes infinite. This is the thing that makes people miss the second-to-last ferry on purpose.
Long Table Dinners (monthly): Thirty guests, a long wooden table on the island, five courses with wine pairings. The chef works the kitchen. The sommelier works the table. Sells out in days.
Vallisaari Wine & Music Festival (last Saturday in July): 100+ wines, live music, art exhibitions, wine auction. One day. Limited tickets. The biggest single wine event in Helsinki.
Yoga on the Battery (Sundays): On the Aleksanterinpatteri — an 1800s artillery platform with sea views in every direction. All levels. The setting does the work.
Full calendar: iisivallisaari.fi/tapahtumat
What Food Can You Get on Vallisaari?
Two restaurants, both open May through September. Card payment only. No reservations needed.
Cafe IISI sits 100 metres from the ferry dock. The terrace faces south, and on a clear day the light stays on it for hours. Coffee, pastries, lunch plates, wine, cocktails. This is where the tastings happen, where the DJ plays, where everything starts.
IISI Bistro is a ten-minute walk deeper into the island, at Torpedolahti harbour. The salmon soup — creamy, deeply savoury, served with fresh bread on a harbour dock — has a 4.7 rating on Google and a reputation that extends well beyond the island. Order a glass of something cold and white with it. This is the meal you’ll mention first when someone asks about your trip.
How Do You Get to Vallisaari?
Operator: JT-Line water bus, departing from Kauppatori (Market Square), Keisarinluodonlaituri pier.
Season: May 2 - September 27, 2026.
Frequency: Hourly departures in July and August (daily). June and September typically Friday-Sunday or reduced schedule.
Journey: 20 minutes each way.
Tickets: Approximately 14 EUR return (adults). Buy online in advance — weekend ferries fill up, especially when the sun is out.
Last ferry back: Around 20:00-21:00 depending on the month. Check the time before you go. Write it down. The alternative is a water taxi that costs more than everything you drank. That’s the kind of mistake that’s only funny when it happens to someone else.
Tip: If you’re combining Vallisaari with the Helsinki Wine Trail, take the morning ferry out. Budget 2-3 hours on the island (tasting + exploration). You’ll land back at Market Square by early afternoon, perfectly timed for the walking trail through the city.
What Is the Connection Between Vallisaari and the Helsinki Biennial?
Every odd year, Vallisaari hosts part of the Helsinki Biennial — contemporary art installed in the 19th-century Russian ammunition bunkers. Sculpture in the powder magazines. Video installations where soldiers once stored explosives. The contrast between military ruin and contemporary art is the kind of thing that makes curators lose sleep with envy.
The next edition is 2027. The art is free. The wine at IISI is not. Together, they make a day that layers nature, history, art, and wine in a way no museum and no vineyard can replicate. Plan around it if you can.
What Should You Honestly Know Before Visiting Vallisaari?
Weather: The island is windier than the mainland. Bring a real jacket, not a fashion layer. Even in July. If it rains, you’re in the rain — the terrace has some cover, but this is an outdoor experience on an exposed island. Check the forecast. Accept the conditions.
Shoes: Comfortable walking shoes with grip. The nature trails are uneven — roots, rocks, packed earth. The path from the dock to IISI is paved. Everything else is not.
Accessibility: The main path from dock to cafe is flat and paved. Nature trails and ruins are rough terrain with steps and uneven surfaces.
Kids: Welcome at the cafes. Wine tastings are 18+.
Dogs: Welcome, on leash.
What it’s not: This is not a polished resort experience. There’s no hotel on the island. The facilities are basic. The bathrooms are portable. The charm is in the rawness — military ruins, wild nature, wine served where ammunition used to sit. If you need polish, go to Suomenlinna. If you want something you’ll actually remember, come here.
Can You Stay Overnight on Vallisaari?
TreeTent glamping launched on Vallisaari for visitors who want to spend the night on an island that civilians weren’t allowed to sleep on for 200 years. Suspended tents between trees, shared facilities, morning coffee on an empty island before the first ferry brings the day crowd. It is exactly as strange and wonderful as it sounds.
Check availability at the Vallisaari visitor information — capacity is limited, and it books out in summer.
What’s the One Thing Nobody Tells You About Vallisaari?
Vallisaari gets a tenth of the visitors that neighbouring Suomenlinna gets. One kilometre away, a UNESCO fortress receives 1.5 million visitors a year. Here, on a Friday afternoon, you might have an entire trail to yourself. The wildflower meadows, the bat tunnels, the sea views — shared with a few dozen people instead of a few thousand.
That won’t last. Every travel article about Helsinki eventually discovers this island. Every summer, more people take the ferry. The window between “local secret” and “TripAdvisor top 10” is closing.
The tasting is 59 EUR. The ferry is 14 EUR. The DJ is free. A Friday afternoon on a fortress island that was locked for two centuries, with six wines chosen by someone who cares and a sun that refuses to set — that’s the kind of thing that money can’t buy anywhere else on earth. But you can book it at iisivallisaari.fi/tapahtumat.
At a Glance
| Detail | Info |
|---|---|
| What | Sommelier-led wine tasting on a former military island |
| Where | Vallisaari Island, 20 min ferry from Helsinki Market Square |
| When | May-September, Fri & Sat at 13:00 and 17:00 |
| Price | 59 EUR (5 wines + food pairings) + ~14 EUR ferry return |
| Duration | 90-minute tasting + 2-3 hours island exploring |
| Book | iisivallisaari.fi/tapahtumat — Saturdays sell out 1-2 weeks ahead |
| Language | Finnish and English |
| Rating | 4.7/5 TripAdvisor (#104 of 1,791 Helsinki restaurants) |
| Season | Ferry runs May 2 - September 27, 2026 |
Frequently Asked Questions
How do I get to Vallisaari island from Helsinki? Take the JT-Line water bus from Kauppatori (Market Square) pier. The journey takes 20 minutes. Ferries run hourly in July-August, typically Friday-Sunday in June and September. Round-trip tickets cost approximately 14 EUR for adults. Buy online in advance — weekend ferries fill up on sunny days.
How much does the IISI wine tasting cost? The sommelier-led tasting costs 59 EUR per person and includes 5 wines with food pairings. Sessions run every Friday and Saturday at 13:00 and 17:00 from May through September. Booking is required — reserve at iisivallisaari.fi/tapahtumat.
What happens if it rains on Vallisaari? Vallisaari is primarily an outdoor experience. The IISI terrace has some cover, but if it rains heavily, you will get wet. Check the forecast before booking. The island and its trails are exposed — bring a proper waterproof jacket, not a fashion layer. Tastings proceed in light rain.
Can I visit Vallisaari without doing the wine tasting? Yes. The island is open to all visitors during ferry season (May-September). You can explore the nature trails, military ruins, powder cellars, and wildlife for free. Cafe IISI and IISI Bistro serve food and drinks without reservation. The wine tasting is a separate ticketed event.
Is Vallisaari suitable for children? Children are welcome at the cafes, restaurants, and nature trails. The wine tastings are 18+. The island’s trails range from paved (dock to cafe) to rough terrain (nature paths through ruins), so sturdy shoes are important for kids exploring beyond the main paths.
What time is the last ferry back from Vallisaari? The last ferry departs around 20:00-21:00 depending on the month. Check the exact time on the day of your visit and set an alarm. Missing the last ferry means a water taxi that costs significantly more than your entire day on the island.
Can I combine Vallisaari with Suomenlinna? Yes — Suomenlinna (UNESCO World Heritage fortress) is just 1 kilometre away and visible from the IISI terrace. Some ferry routes connect the islands directly. The ideal combination: Suomenlinna in the morning, Vallisaari in the afternoon. Budget 6-8 hours for both islands.
Sources
- JT-Line Ferries — Vallisaari ferry schedules and tickets
- Visit Helsinki — Vallisaari island and tourism info
- Wikipedia: Helsinki — City geography and islands
- UNESCO: Suomenlinna — Nearby fortress context
Updated March 2026.
