Olavinlinna Castle by night.
St. Olaf's Castle - was founded in 1475 by Erik Axelsson Tott.The castle served to repel attacks from the east and to guarantee
control of the Savo region for the Swedish Crown.
The medieval castle consists of a main castle with three
towers and a bailey with an encircling wall reinforced by towers.
The castle went through numerous phases of construction, first
as a Swedish and from 1743 as a Russian border fortification.
It has been among Finland's best-known tourist attractions since
the latter 19th century.