Archipelago Sightseeing Boat Cruise Helsinki

Suomenlinna, the sea fortress of Helsinki

Suomenlinna is a fortress spread across several islands just off the city, begun by the Swedes in the 18th century to guard the coast. It later fell to Russia and became Finnish in 1917, and UNESCO added it to the World Heritage List in 1991. From the water you see the heavy walls, cannon batteries and the old harbour gates that were built to defend the city.

The cruise passes close to the fortress, so you get the best views of its defensive lines without leaving the boat. If you plan a Suomenlinna visit on another day, note that ferries leave from Market Square as well, and a whole day is easy to fill. The cruise gives you the overview, and a later ferry gives you the walking time.

Market Square, Katajanokka and Uspenski Cathedral

The cruise starts and ends at Market Square, Kauppatori, the open harbour square where stalls have sold fish and produce for generations. Nearby, the red-brick Uspenski Cathedral on the Katajanokka peninsula is the largest Orthodox church in Western Europe, built in the 1860s with gold onion domes that catch the sun.

Katajanokka is also a district of Art Nouveau buildings and a base for the Finnish icebreakers that keep the harbour open through winter. Seeing the ships from the deck is more memorable than a photo from the quayside. Many travellers look for a Helsinki harbour cruise because these sights sit so close together, and the boat links them in one loop.

Seaside districts, islands and Korkeasaari

The route also takes in the city's waterfront districts, including Eira with its Art Nouveau villas, Kaivopuisto park, and the old streets of Kruununhaka. Beyond them lie small forested islands such as Harakka, a nature reserve, and Pohjoinen Uunisaari, plus Korkeasaari, the island that holds Helsinki Zoo. The archipelago is what makes Helsinki different from other capitals, because green islands sit within minutes of the centre.

An audio guide in English and Finnish plays through the loudspeaker, and a downloadable app gives commentary in 28 languages, so bring headphones and a charged phone if you prefer your own language. The scenery is best in bright weather, when the light on the water and the roofs is soft, and the long summer evenings give a special glow.

Planning your Helsinki boat cruise

The cruise lasts about 90 minutes from May to September and about 1 hour in the off-season, so check the length for your date. Departure times vary by season, and the booking panel shows the ones available. In the warm months you sit on the outdoor sundeck, and off-season the ticket gives you indoor seating, which is helpful when the sea wind is cold.

Weather and safety can change the sailing, especially outside the summer season, and the cruise may be rescheduled if the boat cannot go out. Wear warm layers even in summer, because the sea breeze is strong. If you are wondering whether a Helsinki archipelago cruise is worth it, it is a relaxed way to see the city's main sights in around an hour or two.