The Breisacher Stephansmünster is a Romanesque-Gothic church and landmark of the town of Breisach am Rhein. The church dates from the 12th century and was expanded and remodelled to the Gothic style in the 15th century. The construction time is not precisely known. It was probably started after 1185 and completed in 1230. The church is known for its historically significant interior, for example for the more than 100-square-meter mural The Last Judgement by Martin Schongauer.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.