The best museums Sund

The impressive ruins by the width of its red granite stones of a vast fortress built by the Russians between Finby and Prästö. The French and English destroyed it during the Crimean War in 1854. A possible opportunity for a 13 km walk between Bomarsund and Kastelholm Castle. Count 4 hours of walking on a well signposted route. Opposite, on the island of Prästo, is the small museum of Bomarsund where the results of the excavations are housed.