Suomenlinna Maritime Fortress

This base for the archipelago fleet was originally built midway through the 18th century, when Finland was part of the Swedish kingdom. In 1991, Suomenlinna was designated as a UNESCO World Heritage Site.

The different parts of the six islands offer a variety of atmospheres; whether you are looking for a cheerful weekend with friends, a tranquil evening stroll or perhaps a jog - it is all made possible by the diverse routes and locations across the islands. 

Suomenlinna is an 18th-century sea fortress and nature area with centuries-old artillery and defensive walls, spread across 6 linked islands. Walking trails cross parkland between popular sights like the King's Gate drawbridge and Suomenlinna Museum, which recounts military and maritime history. Submarine Vesikko lets visitors explore a restored 1930s vessel. There's also a brewery and several waterside restaurants.