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Suomenlinna, also known as Sveaborg, is a sea fortress on an island near Helsinki. Recognized by UNESCO, it reflects Finland’s rich maritime history.
Suomenlinna (Swedish: Sveaborg) is a historic sea fortress just off the coast of Helsinki. It was built in 1748 on a cluster of connected islands and once guarded the region against Russia.
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Today, this impressive landmark is part of the UNESCO World Heritage list and ranks among the most visited sights in Finland. Hundreds of thousands come each year to explore its walls and sea views. Ferries leave from Helsinki’s Market Square and reach the islands in about fifteen minutes.
Suomenlinna Photos
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Image Source: 1001Love / Canva
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* Note: The photos in this gallery have been cropped and/or resized. The images are used under the Creative Commons licenses specified in the original sources.
Beyond its history, Suomenlinna is a lively neighborhood with around 800 residents. Small cafés, museums and green parks make the area a favorite for both locals and travelers. Many enjoy a slow walk along the old ramparts while watching the sea. There are also picnic spots and art galleries scattered across the fortress.
There is an open prison on Suomenlinna where inmates help with restoration work. They live on the island under supervision and work on historic buildings.
Visiting Tips: Opening Hours, Entrance Fees & Tickets
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🏰 Visitor Information
Opening Hours: 🕒
- Suomenlinna Visitor Centre: Mon–Sun 10:00–16:00
- Suomenlinna Museum: Daily 10:30–17:00 (Jun–Aug 10:00–18:00)
- Customs Museum: Closed; reopens spring 2026
- Ehrensvärd Museum: May–Aug daily 10:30–13:00 & 13:30–17:30; Apr & Sep weekends 10:30–16:00
- Military Museum (Manege & Artillery Hall): Daily 11:00–16:30
- Submarine Vesikko: May–Sept daily 11:00–18:00; Oct–Apr closed
Admission & Prices: 🎟️
- The fortress outdoor areas are free to visit
- Suomenlinna Museum: Adults €10 / Students & Pensioners €8 / Children (7–17) €5
- Customs Museum: Free admission (seasonal; currently closed)
- Ehrensvärd Museum: Seasonal pricing; check on site when open
- Military Museum (Maneges): Typical admission from ~€7; concessions available
- Submarine Vesikko: Adults €7 / Reduced €4 / Under 7 free (summer season)
* Helsinki Card / Museum Card grants free entry to several museums when valid.
Visitor Rules: ⚠️
- Private boats may moor only at the guest quay; other piers have restrictions.
- Sales, advertising, tents or reserving areas without permission are prohibited.
- Drone use is restricted; filming/photography for productions requires prior permission.
- Motorised vehicles are generally not allowed; move around on foot, by bicycle or rickshaw.
Accessibility: ♿
- A level sand-covered route connects the ferry pier with the Visitor Centre and suits wheelchairs and strollers.
- Maintained easier routes are signed; ask at the Visitor Centre for current conditions.
- Accessible toilets are available (door width over 85 cm) near the ferry area and at the Visitor Centre and museum cafés.
- Suomenlinna Museum is accessible; elevator assistance available to upper floor.
- Ehrensvärd Museum and Submarine Vesikko are not wheelchair-accessible.
- HSL ferries (Suomenlinna II, Suokki, Tor) and some waterbuses are accessible, depending on water level.
Whether you prefer a relaxing boat trip from Helsinki, a guided walk through the historic islands or themed tours with licensed guides – all these options help you understand the history and unique character of the fortress.
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If you’d rather explore Suomenlinna Museum on your own, you can easily book your ticket here. With the Helsinki City Card, you can visit the Suomenlinna Museum and many other attractions in the city free of charge.
The old cobblestone streets were intentionally built uneven to slow down enemy cannons and wagons in case of attack. You can still feel it when walking today.
A visit is rewarding in every season. Summer brings a light, cheerful vibe, while winter reveals a quiet and raw beauty. History lovers, architecture fans and sea enthusiasts will all find something special here.
The Finnish submarine “Vesikko,” which was active during World War II, now lies in Suomenlinna as a museum ship. It is the last of its kind in the world.
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Hotels near Suomenlinna
Visitors looking for accommodation close to Suomenlinna can find suitable hotel offers using the form below.
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Map & Contact Information
CONTACT
Address:
Suomenlinna C 1, 00190 Helsinki, Finland
Phone:
+358 29 5338410
Website:
Frequently Asked Questions
Is Suomenlinna worth visiting?
Yes, Suomenlinna is absolutely worth visiting. The fortress offers a unique mix of history, nature and sea views just a short ferry ride from central Helsinki. It’s one of the most visited attractions in Finland.
How long is it from Helsinki to Suomenlinna?
The ferry trip from Helsinki Market Square to Suomenlinna takes around 15 to 20 minutes. The distance is about 4 km across the Helsinki archipelago.
What is Suomenlinna famous for?
Suomenlinna is famous for its bastion fortifications and rich maritime history. Built in the mid-18th century, it became a UNESCO World Heritage Site in 1991.
Is Suomenlinna worth visiting in winter?
Yes, Suomenlinna has a special charm in winter. The ferry operates year-round, even when the sea freezes. Visitors can enjoy quiet walking paths and beautiful snowy scenery.
How much is the ferry from Helsinki to Suomenlinna?
A one-way ferry ticket with HSL costs the same as a standard public transport ticket. As of 2025, the adult fare is around €3.20. The ticket is valid for 80 minutes and can be used on trams, buses, metro and the Suomenlinna ferry.