Experience Helsinki’s scenic archipelago from the sea during this waterborne tour through the maze of islands that surround the Finnish capital. Driven to harborside Market Square, you’ll take to the water for a guided cruise that brings you by waterfront suburban neighborhoods where locals live, romantic old villas and giant icebreakers, among many other unique sights. Even the city zoo is on one of Helsinki’s generous share of the 180,000 isles to be found in Finland. But one island in particular stands out from the rest, and you’re headed there for a guided walk. Suomenlinna is both a major military monument and a UNESCO World Heritage site. Built during the days when Sweden ruled Finland, this remarkable citadel straddles several small islands and once reigned as the Baltic’s most powerful sea fortress. Its military shipyard was one of the world’s largest dry-docks and Suomenlinna was considered on par with the great maritime fortifications at Gibraltar. Today, 250 years on, it remains carefully preserved and makes a fascinating place to explore and learn about. After the guided fortress walk, you’ll have some time to free-range on this picturesque island and discover it further.