The Château de Septfontaines was built in 1783–1784 by Jean-François and Pierre-Joseph Boch, who had opened their nearby porcelain factory in 1767, when Luxembourg was part of the Austrian Netherlands. The brothers had chosen Rollingergrund for their factory, as it offered all that was needed: clay, water and wood for the ovens. It was designed so that both their families could live there, which explains why the first floor is divided into two separate sections for the bedrooms, while the rooms on the ground floor, including the dining room and lounge, could be used by both families.
The castle was once occupied by French troops and was sold in 1914. After Luitwin von Boch had acquired it once again in 1970 in the name of Villeroy & Boch, he charged his cousin Antoine de Schorlemer to undertake comprehensive renovation work which lasted a full 12 years.
The rooms now testify to the success of the Boch brothers. Porcelain of all shapes and sizes decorates the walls and the windows. In the dining room hangs a portrait of the Austrian empress Maria Theresa (1717–1780), who had allowed them to build their factory in Rollingergrund and who had freed them from taxation for the first ten years. Now available for business conferences and receptions, the building is still used by the management, partners and clients of Villeroy & Boch when they are in Luxembourg.
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.