Veytaux, Switzerland
12th century
Gruyères, Switzerland
1270-1282
Bellinzona, Switzerland
13th century
Laufen-Uhwiesen, Switzerland
9th century AD
Rapperswil-Jona, Switzerland
1200-1220
Thun, Switzerland
1180-1190
Nyon, Switzerland
13th century
Neuchâtel, Switzerland
11th century
Oberhofen am Thunersee, Switzerland
c. 1200
Bellinzona, Switzerland
14th century
Spiez, Switzerland
12th century
Yverdon-les-Bains, Switzerland
1260-1270
Grandson, Switzerland
13th century
Aigle, Switzerland
13th century
Lenzburg, Switzerland
c. 1100
Estavayer-le-Lac, Switzerland
1392
Seengen, Switzerland
12th century
Sargans, Switzerland
1282
Regensberg, Switzerland
13th century
Bulle, Switzerland
1230s
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.