Drone shot following the Viking line, a large passenger ferry, passing the Suomenlinna and Vallisaari islands, sunny, summer day, in Helsinki archipelago, Finland - Dolly, aerial view

viking line passenger ferry large suomenlinna vallisaari island sunny summer day helsinki archipelago finland aerial view ship sea baltic travel europe vessel space copy cruiseferry cruise red water vacation big nautical fortress modern northern finnish world site heritage sveaborg unesco tourism port fort walls fortification gulf of finland baltic sea between passing through