olavinlinna also known as st. olaf`s castle, a 15th-century three-tower castle located in savonlinna, finland

15thcentury also ancient architecture building castle city clouds defensive dramatic europe facade famous finland flag fort fortification fortress historic historical history imposing island known lake landmark landscape located medieval north olaf olafs olavinlinna old reflection rock savonlinna scandinavia scandinavian scenic sky stone summer sunset suomi threetower tourism tower towers town travel trees view wall water waving windy