Ключевые слова: ancient, architecture, artillery, attraction, baltic, bastion, building, casemate, castle, defense, defensive, europe, famous, finland, finnish, fort, fortification, fortress, granite, helsinki, heritage, history, impregnable, island, landmark, landscape, loophole, military, monument, old, scandinavia, scenery, sea, sightseeing, stone, stronghold, summer, suomenlinna, suomi, susisaari, sveaborg, swedish, tourism, tourist, travel, unassailable, unesco, view, wall,