Svartholma Sea Fortress

Aerial view of an island with a sea fortress.

In the mazes and on the walls of Svartholma, visitors can experience the fortress' isolation for themselves, and imagine foreign troops approaching on the horizon. Time-travel to the year 1808: Russians attack across the border of the Kingdom of Sweden and besiege Svartholma, which is forced to surrender to the enemy. This signifies a transfer of power in Finland and the eastern flag is hoisted over Svartholma. The beautiful natural environment and fresh sea wind at the fortress will return you to the present day.

Conquer the Starfish of Loviisa

Location of Svartholma Sea Fortress in FinlandLocation: Uusimaa, Loviisa

Visit: A regular water bus service from Laivasilta in Loviisa, guided tours available, an exhibition open from 21 June to 28 August. Restaurant open from 28 May to 28 August. Read more 

Instructions and rules: The Svartholma Sea Fortress is a fixed relic site, which may not be excavated, covered or damage in any way under the Antiquities Act ( Campfires are also prohibited.

Sights and Activities: The sea fortress and sea views, the exhibition 'The island of soldiers, prisoners and tourists', guided walks, adventure tours for children. Read more

Services: Summer restaurant Cafe Svartholm, cruises, campfire sites, a visitors' berth with services, a camping site, children's playground, toilets. Services provided by partners are available. Read more

Suitability: A summer destination for the entire family, the "Fortress of Suomenlinna in miniature". The island has no special services for the disabled, except Summer restaurant Cafe Svartholm is accessible for wheelchair users and there is a toilet for the disabled. The terrain is mainly even and the paths are easy. The island is accessible for prams.
The address of this page:

The site is managed by Metsähallitus, Parks & Wildlife Finland.

Customer Service

Visit Kotka-Hamina Office
Tel. +358 40 135 6588

Finnish Nature Centre Haltia, Tel. +358 40 163 6200, info(at)

Metsähallitus customer service spatial planners
Southeast Finland: Pekka Koponen, tel. +358 206394238
The Metropolitan area: Liisa Heinonen, tel. +358 206394638
Western Uusimaa: Anne Muuri, tel. +358 206394708
Southwest Finland: Laura Lehtonen, tel.+358 206394659
Kvarken, Southern and Central Ostrobothnia: Tuija Warén, tel.+358 206395282 
Satakunta: Marjo Kekki, tel.+358 206394266
Email address: first name.last name (at)

A hand holding a mobile phone showing Open the map of Svartholma in