St Christine of Lena is an Asturian pre-Romanesque church located in the Lena municipality, on an old Roman road that joined the lands of the plateau with Asturias.
The church has a different ground plan to Pre-Romanesque's traditional basilica. It is a single rectangular space with a barrel vault, with four adjoining structures located in the centre of each facade. The first of these annexes is the typical Asturian Pre-Romanesque vestibule, with a royal tribune on the upper part, accessed via a stairway joined to one of the walls. To the east is the enclosure with the altar, with a single apse, foregoing the traditional Asturian pre-romanesque triple apse, and going back to Visigoth influences. To the north and south respectively, there are two other enclosures through semicircular arches and barrel vaults, whose use was associated with the Hispano-Visigothic liturgy practised in Spain up to the 11th century.
One of the most particular elements of Santa Cristina de Lena is the existence of the presbytery elevated above floor level in the last section of the central nave, separated from the area intended for the congregation by three arches on marble columns. This separation, which appears in other Asturian churches, is not repeated in any other with a similar structure. Both the lattices over the arches and the wall enclosing the central arch were re-used from Visigothic origins in the 7th century.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.