Espalion, France
11th century
Loubens-Lauragais, France
15th century
Alrance, France
15th century
Altier, France
1498
Coupiac, France
15th century
Saint-Étienne-Vallée-Française, France
14th century
Pourcharesses, France
1578
Onet-le-Château, France
1518-1519
Fenouillet, France
11th century
Aujac, France
12th century
Salvagnac-Cajarc, France
13th century
Lacaze, France
15th century
Coustaussa, France
12th century
Allègre-les-Fumades, France
12th century
Saint-Béat, France
12th century
Sainte-Mère, France
13th century
Termes-d'Armagnac, France
13th century
Livers-Cazelles, France
13th century
Rouze, France
11th century
Padern, France
11th century
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.