What makes Suomenlinna special is the fact that the fortress is still a living part of Helsinki. As you walk between the islands, you’ll pass homes, a school, cafés, and residents going about their daily lives, all surrounded by centuries-old ramparts and sea views.
The church is one of Helsinki’s most popular wedding venues and is widely regarded as one of the city’s most beautiful places to tie the knot. During the warmer months, it’s not uncommon to see wedding parties arriving or celebrations taking place.
Quick Info
- When to visit: Any dry day, ideally with sunshine
- Time needed: 2-4 hours
- Ferry Schedule: Check on HSL
- Cost: €3.30 for a one-way ferry from Market Square (Kauppatori)
- Guided tour: Check this highly-rated one.
Suomenlinna is very easy to reach as ferries run frequently, so if feel that you’ve seen enough after a couple of hours, you can simply hop on the next ferry back to Helsinki.
What is Suomenlinna
Suomenlinna began as a Swedish sea fortress in the 1740s, built to protect the border from the Russians. Over the centuries, it evolved from a military stronghold into a living island community and one of Finland’s most visited historic sites.
Today, it is a UNESCO-listed attraction where centuries-old fortifications, cannons, five different museums, and everyday life coexist. Around 800 people live on the islands year-round, while roughly one million visit each year. Making it a bit like a zoo, however, the residential areas are for local residents only, so be sure to pay attention to the signs.
There are plenty of cafés, restaurant, and bars on the islands, making it convenient for visitors.
Besides from the history and the community, you’ll get waterfront walking trails and seaviews in every direction. The skyline view of Helsinki isn’t bad either.
Don’t miss King’s Gate, it’s Suomenlinna’s best-known landmark and one of the most photographed spots on the islands.
Which Museums to Visit in Suomenlinna
There are five museums on Suomenlinna, although most visitors only visit one or two. The Suomenlinna Museum is usually the best starting point if you’re interested in the fortress’s history. The second most common is the Military Museum. These two are open year-round.
The other three museums are only open during the summer.
- Ehrensvärd Museum
A glimpse into life in Suomenlinna during the 1700s, with historic rooms, furniture, and artifacts. - Submarine Vesikko
A restored WWII submarine where you can see how Finnish sailors lived and worked underwater. - Customs Museum
The history of Finnish customs, border control, and anti-smuggling efforts through the centuries.
Who Should Skip Suomenlinna
Even if military history isn’t your thing, Suomenlinna is worth visiting for its sea views, walking trails, cafés, and relaxed atmosphere. The main exception is bad weather. Much of the experience revolves around exploring the islands on foot, so a day of heavy rain and strong winds can make the visit far less enjoyable.
If the sun is shining though, you can easily spend a full day wandering around the fortress, visiting a museum or two, enjoying the sea views, and hopping between a few bars along the way.
How long to stay in Suomenlinna
A quick visit takes about 2-3 hours, which is enough to walk around the islands and visit a museum. A half-day is ideal though, especially if the weather is good. Add a meal, a museum, and some time to enjoy the sea views, and four hours will pass surprisingly quickly.
If you enjoy peaceful places like this, consider staying overnight. Suomenlinna has a hostel that offers both dorm beds and private rooms, often at a quite reasonable price. Just be sure to book ahead, as accommodation is limited and can fill up quickly, especially during the summer months.
Join a Guided Tour or Stroll Around By Yourself
It really depends on how you like to explore historical sites. Some people enjoy diving into the history on their own, reading about the fortress and discovering its stories at their own pace.
For many visitors, though, a guided tour is the more enjoyable option. I’m in that camp myself. It’s an easy way to learn the stories behind the fortress, and a good guide can bring the islands to life without requiring much effort on your part. Guided tours are also reasonably priced, making them a worthwhile addition to your visit.
Top-Rated Guided Tour
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Self-guided Tour of Suomenlinna
If you prefer exploring on your own, have a look at the map below. I’ve marked the museums, along with a few of the sights I enjoyed most, and the ferry terminals to make it easy for you. Use it more as a compass than a checklist and leave some room for wandering.
Overview of Suomenlinna
How to Use the Map: Click the top-left corner to view and select map layers. To save the map for later, just click on the star icon.
Keep Exploring Helsinki
Finished exploring the fortress? Continue planning your Helsinki trip with my Helsinki 2-Day Itinerary, or find the best sauna in Helsinki to round off your visit like a local. If you’re traveling on a budget, my Cheap Stay Helsinki guide covers the best-value areas and accommodation options to base yourself.
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