Ekerö, Sweden
12th century
Gotland, Sweden
13th century
Lau, Sweden
1220s
Hällekis, Sweden
c. 1150
Sankt Olof, Sweden
13th century
Gotland, Sweden
ca.1250
Åre, Sweden
12th century
Höganäs, Sweden
12th century
Sorunda, Sweden
1540
Dingle, Sweden
12th century
Östra Ryd, Sweden
c. 1300
Tofta, Sweden
13th century
Braås, Sweden
ca. 1170
Växjö, Sweden
1226
Hudiksvall, Sweden
15th century
Dingle, Sweden
12th century
Burgsvik, Sweden
13th century
Ellös, Sweden
12th century
Vallentuna, Sweden
13th century
Vallentuna, Sweden
12th century
Kristiansten Fortress was built to protect the city against attack from the east. Construction was finished in 1685. General Johan Caspar von Cicignon, who was chief inspector of kuks fortifications, was responsible for the new town plan of Trondheim after the great fire of 18 April 1681. He also made the plans for the construction of Kristiansten Fortress.
The fortress was built during the period from 1682 to 1684 and strengthened to a complete defence fortification in 1691 by building an advanced post Kristiandsands bastion in the east and in 1695 with the now vanished Møllenberg skanse by the river Nidelven. These fortifications were encircled by a continuous palisade and thereby connected to the fortified city. In 1750 the fortress was modernized with new bastions and casemates to protect against mortar artillery.