Suomenlinna Sea Fortress Tours
Take the ferry to Suomenlinna, a UNESCO-listed 18th-century sea fortress spread across several islands at the entrance to Helsinki’s harbour, with ramparts, tunnels, cannons, museums and sea views. A fascinating and scenic escape just a short hop from the city centre.
74 tours · prices per person, book with partner
Suomenlinna Fortress in Helsinki — FAQ
What is Suomenlinna?
Suomenlinna is a UNESCO World Heritage sea fortress built in the 18th century across several islands guarding Helsinki’s harbour, with ramparts, tunnels, old cannons, museums, cafés and beautiful sea views.
How do you get to Suomenlinna?
Suomenlinna is reached by a short public ferry (about 15–20 minutes) from Helsinki’s Market Square, running year-round and covered by the city transport ticket — easy and scenic.
Is Suomenlinna worth visiting?
Yes — the historic fortifications, island walks, museums and sea views make Suomenlinna one of Helsinki’s top attractions, easily a half-day or more, lovely in summer.