suomenlinna fortress and kustaanmiekka island view from vallisaari island - helsinki, finland

archipelago architecture attraction building capital castle city cityscape defense destination entrance europe famous finland finnish fort fortification fortress gate gulf helsinki heritage historic history island kustaanmiekka landmark military nordic outdoor scandinavia sightseeing stone suomenlinna suomi susisaari sveaborg tourism travel unesco urban uusimaa vallisaari view wall world