• The Suomenlinna Experience film runs 25 minutes and starts every half hour, with the last showing an hour before the museum closes
• Free with a Museum Card or the Helsinki Card, so families holding either can walk straight in
• The Magic of Handmade Glass, a touring exhibition from the Finnish Glass Museum, runs through Jan 10, 2027

The permanent exhibition traces the Suomenlinna sea fortress from its construction in the 18th century through the Swedish, Russian and Finnish eras, using personal objects, tools and weapons found on the islands. It also shows how soldiers and other inhabitants lived and celebrated.

In the auditorium, the wide-screen film Suomenlinna Experience tells the story of the fortress and the people who built it. A temporary exhibition covers changing themes.