St. Andrew's is a 10th-century Romanesque church located in the old town of Cologne. It is one of twelve churches built in Cologne in that period. Archbishop Gero consecrated the church in 974, dedicating it to St. Andrew, although an earlier church at the site was dedicated to St. Matthew. In the 12th century, the church was rebuilt in the Romanesque style, and was probably completed after the great fire of Cologne in 1220.
In the crypt of the church lies a Roman sarcophagus from the 3rd century, which holds the remains of the 13th-century theologian and natural philosopher St. Albertus Magnus. Since 1947, the Dominican Order has ministered to the church.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.