after Helsinki was founded in 1550 and Helsinki became strategically more important. Present Day Restoration work began in the 1890s and in these days the castle ruins are open to the public. Close to the castle ruins is one of the largest open-air theatre stages in Finland, the Raseborg Summer Theatre. The theatre was founded in 1966, and gives numerous performances in Swedish every year in July, often with a connection to the castle history. References Further reading External links The official homepage of Raseborg Castle ruins and Raseborg Summer Theatre (Swedish/Finnish/English) Raseborg Castle at the Finnish National Board of Antiquities Photographs of Raseborg Castle at Muuka.com Medieval castles in Finland, article at the "thisisFINLAND" website of the Finland's Ministry of Foreign Affairs Raseborg at Northern Fortress The Association of Castles and Museums around the Baltic Sea Buildings and structures completed in 1378 Raseborg Castle Ruins in Finland Buildings and structures in Uusimaa Tourist attractions in Uusimaa History of Uusimaa