Helsinki Fortress Islands – A Themed Cruise Through Maritime History
Looking for something to do on a summer weekend or day in Helsinki? The Helsinki Fortress Islands themed cruise takes you on a journey through the history of maritime fortifications. This guided cruise offers a unique opportunity to learn about the stories of Suomenlinna, Lonna, Vallisaari, and Isosaari from the water. The only actual stop is Isosaari, where passengers can disembark and experience the unique atmosphere of this former military island.
The cruise departs from Helsinki’s Market Square, passing by the historic sea fortresses. Suomenlinna is one of the world’s most significant maritime fortresses and a UNESCO World Heritage Site, with a history dating back to the 18th century. During the guided tour, you will also hear fascinating stories about Lonna and Vallisaari – Lonna was once a base for naval mine clearing, while Vallisaari and Kuninkaansaari are known for their rich biodiversity and military history.
The only stop on the cruise is Isosaari, which remained a restricted military island for decades. It is one of the largest and most intriguing destinations in Helsinki’s outer archipelago. Its fortifications and scenic landscapes make it a unique place to explore. During the stop, passengers have the opportunity to walk around the island, learn about its history, and admire the stunning coastal views.
During the cruise, a cup of coffee and tea are included, and light snacks are available for purchase from the onboard café. This maritime day trip offers a captivating combination of history, nature, and the beauty of Helsinki’s archipelago.
If you want to experience Helsinki’s maritime history in a whole new way, the Helsinki Fortress Islands themed cruise is the perfect choice!
Themed cruises operate from June 14 to September 14, 2025.
Three Reasons to Join the Helsinki Fortress Islands Themed Cruise
- A unique opportunity to visit Isosaari
- Discover the history of Helsinki’s fortress islands from the sea
- Expert guide on board throughout the journey
