is a maritime fortress located off the coast of Helsinki. It is also a
garrison town and a base for archipelago navy. The construction of the
fortress began in 1748.
Submarines in Finland - exhibition at the Suomenlinna Museum
Get to know the history of submarines in waters close to Finland from the beginning of the 20th century to this day.
Guided walking tours
The tour explains why the grand fortress was originally built and takes visitors to the main attractions of the island.
Les Lumières Festival
18th century-style costumes, music and ball can be seen and heard in Suomenlinna during the Les Lumières Festival on 10-16 June.
Opening hours today