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Castles in Finland

21 landmarks in the Castlemap atlas — every one mapped with a photo and its story, 20 with sourced founding dates, ranked by Wikipedia coverage and real readership.

The most famous castle in Finland is Suomenlinna, ranked #69 of 7,738 in the world — followed by Olavinlinna Castle and Turku Castle.

The Castlemap atlas charts 6 castles, 6 fortresses, 3 palaces & châteaux and 6 ruins in Finland. They span more than 6 centuries — from Turku Castle (founded 1300) to SnowCastle of Kemi (1996). Every one is plotted with its photo and story on the interactive castle map of Finland.

Map of castles in Finland

On the map they cluster thickest around Helsinki — 6 within a 100 km day trip. The northernmost is SnowCastle of Kemi, the southernmost Örö — about 667 km apart.

Planning a visit? Day-trip guides: Castles near Helsinki.

See them on the map →

When they were built

Of the 21 landmarks mapped in Finland, 20 carry a sourced founding date. Most were founded in the 18th century — 5 of them. 7 predate 1500 and 10 were built after 1700.

All 21 castles in Finland

Suomenlinna
Fortress · 18th century · #69 worldwide · #1 in Finland
Suomenlinna, or Sveaborg, is a sea fortress composed of eight islands, of which six have been fortified.
Olavinlinna Castle
Castle · 15th century · #284 worldwide · #2 in Finland
Olavinlinna, also known as St. Olaf's Castle, is a 15th-century three-tower castle located in Savonlinna, Finland.
Turku Castle
Castle · 13th century · #358 worldwide · #3 in Finland
Turku Castle is a medieval structure in the city of Turku, Finland. Together with Turku Cathedral, the castle is one of the oldest buildings still in…
Häme Castle
Castle · 13th century · #4 in Finland
Häme Castle or Tavastia Castle is a medieval castle in Kanta-Häme, Finland. It is located in Hämeenlinna, the city between Helsinki and Tampere.
Presidential Palace (Helsinki)
Palace & château · 19th century · #5 in Finland
The Presidential Palace is one of the three official residences of the president of the Republic of Finland.
Kastelholm Castle
Ruin · 14th century · #6 in Finland
Kastelholm Castle is a medieval castle built by the Swedes in the late 14th century.
Raseborg Castle
Ruin · 14th century · #7 in Finland
The Raseborg Castle, is a medieval castle in Raseborg, Finland. The castle was active from 1370s to 1553.
Kultaranta
Palace & château · 20th century · #8 in Finland
Kultaranta is the summer residence of the president of Finland. It is in the district of Kultaranta on the island of Luonnonmaa, in the municipality…
Bomarsund
Ruin · 19th century · #9 in Finland
Bomarsund was a Russian fortress on the Åland Islands in the northern Baltic Sea.
Kajaani Castle
Ruin · 17th century · #10 in Finland
The Kajaani Castle is a ruined fortress built of granite in Kajaani. The castle was built in the early 17th century on an islet in the Kajaani River,…
Government Palace (Finland)
Palace & château · 19th century · #11 in Finland
The Government Palace is the executive office building of the Government of Finland. It overlooks the Senate Square in central Helsinki, Finland.
Kuusisto Castle
Ruin · 14th century · #12 in Finland
Kuusisto Castle was a medieval episcopal castle on the island of Kuusisto in Kaarina, Finland, near Turku.
Svartholm Fortress
Fortress · 18th century · #13 in Finland
The Svartholm fortress was built between 1749 and 1764 outside Loviisa in Southern Finland by Augustin Ehrensvärd.
Örö
Fortress · #14 in Finland
Örö is a large island in the Archipelago Sea in Finland. It is part of the municipality of Kimitoön.
SnowCastle of Kemi
Castle · 20th century · #15 in Finland
The SnowCastle of Kemi is the biggest snow fort in the world. It is rebuilt every winter with a different architecture in Kemi, Finland.
Oulu Castle
Castle · 16th century · #16 in Finland
Oulu Castle was a late defense castle in Oulu, Finland. It was built on an island in the delta of Oulu River in 1590.
Fortress of Lappeenranta
Fortress · 18th century · #17 in Finland
Lappeenranta Fortress is a fortress located in Lappeenranta, Finland. In 1649, after a visit to Vipuri, the Governor-General of Finland, Per Brahe…
Kärnäkoski Fortress
Fortress · 18th century · #18 in Finland
Kärnäkoski Fortress is a bastion fortress in Finland located in Kärnäkoski, Savitaipale built by Russia between 1791 and 1793 to protect Saint…
Hamina Fortress
Fortress · 18th century · #19 in Finland
Hamina Fortress is located in Finland on the coast of the Gulf of Finland and it is an integral part of the Hamina city centre.
Liinmaa Castle
Castle · 14th century · #20 in Finland
Liinmaa Castle was a medieval castle in Eurajoki in the province of Satakunta in Finland.
Brahelinna
Ruin · 17th century · #21 in Finland
Brahelinna is a castle ruin in Ristiina, located in the southern part of Mikkeli in South Savo, Finland.

Frequently asked questions

How many castles are in Finland?

The Castlemap atlas maps 21 landmarks (6 castles · 6 fortresses · 3 palaces & châteaux · 6 ruins) in Finland — a curated selection of well-documented landmarks from Wikidata, not a count of every fortification ever built.

What is the most famous castle in Finland?

Suomenlinna, ranked #69 of 7,738 worldwide in the atlas's fame ranking, founded in the 18th century.

What is the oldest castle in Finland?

The oldest dated landmark in the atlas in Finland is Turku Castle, founded 1300. Earlier structures may have existed — this is the oldest with a documented founding year.

Where are most of the castles in Finland?

They cluster thickest around Helsinki — 6 of the atlas's landmarks within 100 km.

Which castles in Finland are UNESCO World Heritage Sites?

Per Wikidata, 1 of the mapped landmarks holds a UNESCO World Heritage designation — inscribed in its own right or as part of an inscribed ensemble: Suomenlinna.