Cologne, Germany
1248
Berlin, Germany
1894-1905
Dresden, Germany
1738-1751
Bremen, Germany
11-13th century
Aachen, Germany
793-813 AD
Freiburg, Germany
13th century
Frankfurt, Germany
1867
Mainz, Germany
975 AD
Berlin, Germany
1773
Bamberg, Germany
1002-1111
Trier, Germany
4th century / 1235
Regensburg, Germany
1273
Stuttgart, Germany
1955
Speyer, Germany
1030
Magdeburg, Germany
1209
Passau, Germany
1688
Münster, Germany
1192-1264
Würzburg, Germany
1040
Erfurt, Germany
14th century
Worms, Germany
1110
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.