Vilnius, Lithuania
1429
Vilnius, Lithuania
1386-1426
Vilnius, Lithuania
c. 1409
Vilnius, Lithuania
1952
Vilnius, Lithuania
1495–1500
Vilnius, Lithuania
1750
Vilnius, Lithuania
1992
Vilnius, Lithuania
1503-1522
Vilnius, Lithuania
15th century
Vilnius, Lithuania
1636
Vilnius, Lithuania
1668-1676
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.