Aerial view overlooking the walls and the coast of the Susisaari island, at the Suomenlinna fortress, sunny, summer day, in Helsinki, Finland - tracking, tilt down, drone shot

susisaari island suomenlinna sveaborg fortress kustaanmiekan linnake bastion kuninkaanportti helsinki finland travel summer stone heritage baltic view old water building unesco fort coast historic military finnish sky city landscape tourism europe architecture landmark world historical scandinavia walls fortification background ancient tourist famous capital outdoor wall scenic shore green grass day