Suomenlinna: touring Helsinki's sea fortress island

Founded in 1748 on a cluster of islands off the coast of Helsinki, the Suomenlinna sea fortress is a cultural treasure. Built when Finland was still part of the Kingdom of Sweden, Suomenlinna has taken a vital part in the history of Finland.

Today, it is not only a UNESCO Heritage Site but also one of the most popular days out among tourist and locals alike. Check out what to expect from Helsinki's sea fortress islands!