The first church in Cherbourg, built around 435 AD, was destroyed in Norman raids in 841. Wilhelm the Conqueror ordered to build a new one in the 11th century. That church suffered badly in the Hundred Years" War and the current Gothic church was built to its ruins between 1450-1466. The Holy Trinity Church was secularized and looted during the Revolution in 1794, but rebuilt in the 19th century. The Neo-Gothic tower was erected in 1828.
The wooden pulpit dates from 1767 and altarpiece from 1814.References:
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.