The waves of the Kronbergsfjärden bay crash against the rocks bounding the fortress of Suomenlinna, a sight as riveting as the fortress itself. The majestic fortification straddles six islands that compose the city of Helsinki, and is representative of a long-drawn struggle in Finnish history. Originally called Sveaborg from 1748 to 1808, this sea fortress was the property of Sweden before it was ambushed in the Russo-Swedish war. Later, Suomenlinna stood testament to the time of Russian administration, until the independence of Finland made it the latter's property. Also known as the Castle of Finland, the Suomenlinna draws comparisons to the Fort of Gibraltar, and is a UNESCO World Heritage Site. The fortress houses six museums that can be explored at leisure.