Genoa Cathedral is dedicated to Saint Lawrence (San Lorenzo), and is the seat of the Archbishop of Genoa. The cathedral was consecrated by Pope Gelasius II in 1118 and was built between the twelfth century and the fourteenth century as fundamentally a medieval building, with some later additions.
Various altars and chapels have been erected between the 14th and 15th centuries. The small loggia on the north-eastern tower of the façade was built in 1455; the opposite one, in Mannerist style, is from 1522. In 1550 the Perugian architect Galeazzo Alessi was commissioned by the city magistrates to plan the reconstruction of the entire building; however, he executed only the covering of the nave and aisles, the pavement, the dome and the apse.
The construction of the cathedral finished in the 17th century. The dome and the medieval parts were restored in 1894-1900.
The Museum of the Treasury lies under the cathedral and holds a collection of jewellery and silverware from 9 AD up to the present. Among the most important pieces are the sacred bowl brought by Guglielmo Embriaco after the conquest of Caesarea and supposed to be the chalice used by Christ during the Last Supper.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.