Olavinlinna, the medieval St. Olaf's Castle built in 1475.

The Republic of Finland is one of the Nordic countries and a member of the European Union. Situated in Northern Europe, it shares land borders with Sweden to the west, Russia to the east and Norway to the north while Estonia lies to its south. Finland is bounded by the Baltic Sea with the Gulf of Finland to the south and the Gulf of Bothnia to the west. The Åland Islands, off the south-western coast, are an autonomous province of Finland.