Metzerlen-Mariastein, Switzerland
1648
Engelberg, Switzerland
1120
Saint-Maurice, Switzerland
6th century AD
Posieux, Switzerland
1138
Kreuzlingen, Switzerland
c. 1125
Bellelay, Switzerland
1136-1142
Pfaffnau, Switzerland
1194
Muri, Switzerland
1027
Rüeggisberg, Switzerland
1072-1076
Fribourg, Switzerland
1255
Chéserex, Switzerland
1110-1120
Kappel am Albis, Switzerland
c. 1185
Niederrickenbach, Switzerland
1528
Wettingen, Switzerland
1227
Dietikon, Switzerland
c. 1130
Alt Sankt Johann, Switzerland
1152
Gommiswald, Switzerland
1761
Seedorf, Switzerland
1138
Bad Ragaz, Switzerland
731 AD
Fraubrunnen, Switzerland
1249
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.