Exploring Suomenlinna Sea Fortress - A Cool Adventure in Helsinki, Finland

Uncover the history, beauty, and hidden gems of Helsinki’s iconic island

Suomi Unveiled
3 min readMay 27, 2024
Suomenlinna Sea Fortress in spring 2024.
Photo taken by author Päivi Meriläinen (Suomi Unveiled)

Non-members can read the full story here.

Are you ready to learn about one of the coolest places you could visit? It’s called the Suomenlinna Sea Fortress, and it’s not just any old fortress — it’s a massive sea fortress spread across several islands! If you find yourself in Helsinki, Finland, this is one adventure you definitely shouldn’t miss. Especially during the summertime, visiting Suomenlinna can be an adventure!

What is Suomenlinna?

Suomenlinna (which means “Fortress of Finland”) is not just a single spot but a cluster of islands connected by bridges. This fortress is so big and important that it’s listed as a UNESCO World Heritage Site. That’s like being named one of the planet’s treasures!

Where is Suomenlinna Located?

Suomenlinna is right off the coast of Helsinki, the capital city of Finland. Helsinki sits in the southern part of the country, right by the sea, so Suomenlinna is just a short ferry ride away from the city center.

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