3 historic sites
Castles in Finland
Finland's medieval heritage is concentrated at its maritime frontier — the sea fortress of Suomenlinna, spread across six islands in Helsinki harbour (UNESCO World Heritage), and Turku Castle, the country's largest medieval fortress, guarding the mouth of the Aura River since 1280. Both were built by Swedish rulers to defend the eastern edge of the Baltic world against Russian expansion.
finland · Helsinki — six islands in Helsinki harbour, 15 minutes by ferry from Market Square
Suomenlinna
The sea fortress that defended Sweden, Russia, and Finland — three countries, one fortress, 275 years of continuous use
finland · South Savo / Savonlinna
Olavinlinna Castle
Finland's most famous castle — a medieval fortress on a lake island that hosts Europe's most atmospheric opera festival
finland · Southwest Finland
Turku Castle
Finland's largest and most important medieval castle — seven centuries of Nordic history at the mouth of the Aura River