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Suomenlinna Fortress
Suomenlinna Fortress

Suomenlinna Fortress

Free admission
Suomenlinna C1, Helsinki

The Basics

The sea fortress has 3.7 miles (6 kilometers) of walls, 290 buildings, and more than 100 guns and cannons. Main sights include the dry dock, the King's Gate, and the fortress' six museums: the Suomenlinna Museum, Customs Museum, Toy Museum, Ehrensvärd Museum, submarineVesikko, and the Military Museum’s Manege.

A top Helsinki attraction, Suomenlinna fortress is featured on most city tours. Walking tours of the sea fortress are available from downtown, and a Helsinki Card includes free entrance to the onsite museums. Boat and canal excursions are also a popular way to access the fortress.

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Helsinki and Suomenlinna Sightseeing Tour
Likely to Sell OutLikely to Sell Out
Helsinki and Suomenlinna Sightseeing Tour
$178.38 per adult
Traveler Favorite
The best of helsinki
My mother and I took this tour with Georg, who was a friendly, knowledgeable and perfect guide given his background! We saw all the highlights of Helsinki and had a good mix of walking and transportation across the city. Georg did a nice job explaining Finnish culture, the significance of the sights, and answering our questions throughout the visit. I would highly recommend this tour for anyone who wants to see the main attractions in Helsinki but only has a few hours!
Therese_D, Oct 2021

Things to Know Before You Go

  • Bring a picnic or enjoy a meal at one of Suomenlinna’s 11 onsite restaurants.

  • Access to the island is free of charge, but each museum has its own entrance fee.

  • Most roads on the islands are cobblestone, which can make it difficult to maneuver a wheelchair or stroller.

  • Dogs are allowed on the island but must be kept on-leash, away from beaches and playgrounds.

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How to Get There

The Helsinki Card includes access to all ferries. HSL ferries depart every 20 minutes from the passenger quay at Helsinki’s Market Square (Kauppatori), while the JT-Line water bus runs during summer and stops at the Visitor Centre pier and King’s Gate.

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When to Get There

The Suomenlinna Museum and some shops and restaurants are open year-round, but many attractions are only open from May to September. Summer is the most popular time to visit, when Helsinki’s weather is typically pleasant.

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Suomenlinna History

Suomenlinna was founded by the Swedes in 1748 to protect against the Russians, but following a prolonged 1808 attack it was surrendered to the Russians, who then used it to protect shipping channels to St. Petersburg. After the Russian Revolution, Finland declared independence and took back Suomenlinna, using it for the military until 1973 when it passed over to the citizens of Finland.

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