Saint-Germain-de-Calberte, France
11th century
Pierrefiche, France
14th century
Lapanouse, France
13th century
Versols-et-Lapeyre, France
13th century
Bédouès, France
13th century
Castagnac, France
12th century
Courrensan, France
13th century
Mérens, France
13th century
Ferrières, France
11th century
Nages, France
1356
Banassac-Canilhac, France
12th century
Corbère, France
12th century
Le Bézu, France
11th century
Cassagnes, France
11th century
Calce, France
12th century
Prat-Bonrepaux, France
13th century
Plaigne, France
12th century
Aimargues, France
9th century
Boissières, France
1577
Clermont-l'Hérault, France
c. 1100
Bomarsund fortress and garrison was built in 1832-1854 by Russian Empire to defence Åland Islands against enemies. British and French fleet attacked against it during the Crimean War in 1854. After a week of fighting the British stormed the remaining fort. Anglo-French forces destroyed it totally after battle. In the Treaty of Paris 1856, the entire Åland Islands were demilitarized, which is a status that has been preserved until this day.
Nowadays there are some ruins left and fortress area is open for visitors.