Amsterdam, Netherlands
1655
Hague, Netherlands
13th century
Delft, Netherlands
1618
Haarlem, Netherlands
14th century
Maastricht, Netherlands
17th century
Apeldoorn, Netherlands
1684-1686
Hague, Netherlands
1716
Hague, Netherlands
1533
Hague, Netherlands
1913
Bergen op Zoom, Netherlands
1485
Baarn, Netherlands
1674
Leek, Netherlands
1884
Heerenveen, Netherlands
1648
Franeker, Netherlands
1591-1594
Doorn, Netherlands
19th century
Heerenveen, Netherlands
1640
Vorden, Netherlands
1600
Haarlem, Netherlands
1785-1789
Leens, Netherlands
17th century
Bunnik, Netherlands
1395
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.