Belfast, United Kingdom
1898
Belfast, United Kingdom
1899
Carrickfergus, United Kingdom
1177
Belfast, United Kingdom
1929
Portballintrae, United Kingdom
13th century
Londonderry, United Kingdom
1633
Enniskillen, United Kingdom
1428
Belfast, United Kingdom
1828
Belfast, United Kingdom
1922
Glenarm, United Kingdom
1636
Greyabbey, United Kingdom
1193
Dundrum, United Kingdom
13th century
Ballycastle, United Kingdom
1485
Comber, United Kingdom
7th century AD
Strangford, United Kingdom
1760s
Devenish, United Kingdom
12th century
Killyleagh, United Kingdom
1180
Downpatrick, United Kingdom
3000 BCE
Warrenpoint, United Kingdom
1560s
Downpatrick, United Kingdom
1180
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.