Photo Suomen Ilmakuva / Suomenlinnan hoitokunta

Suomenlinna Sea Fortress

Suomenlinna, 00190 Helsinki

Suomenlinna sea fortress is a Unesco World Heritage Site located on the coast of Helsinki, and also a suburb of Helsinki with around 800 residents.

The fortress was shaped by three historic eras when it helped to defend first Sweden, then Russia and ultimately Finland. There are six kilometres of walls, 100 cannons, exciting tunnels, and beautiful parks. There are also museums, guided tours, events and restaurants in Suomenlinna.

Private guided tours of the fortress, in several languages, can be booked in advance ([email protected]). Public guided tours in English are announced in the events calendar on the Suomenlinna webpages.

The fortress is easily accessed all year by public transport (HSL) ferry from the Market Square (daily) or the HSL maintenance ferry from Katajanokka (on weekdays). The travelling time is approx. 15minutes. In 2022 from May to September, also FRS Finland operate to Suomenlinna, from Lyypekinlaituri pier near the Old Market Hall.