Speyer Cathedral was founded by Konrad II in 1030, probably soon after his imperial coronation. It was rebuilt by Henry IV, following his reconciliation with the Pope in 1077, as the first and largest consistently vaulted church building in Europe. The Cathedral was the burial place of the German emperors for almost 300 years.
Speyer Cathedral is historically, artistically and architecturally one of the most significant examples of Romanesque architecture in Europe. Today – after the destruction of the Abbey of Cluny – Speyer Cathedral is the biggest Romanesque church in the world. Likewise its crypt, consecrated in 1041, is the biggest hall of the Romanesque era.
The Cathedral is an expression and self-portrayal of the abundance of imperial power during the Salian period (1024 - 1125) and was built in conscious competition to the Abbey of Cluny as the building representative of the papal opposition.
The Cathedral incorporates the general layout of St Michael of Hildesheim and brings to perfection a type of plan that was adopted generally throughout the Rhineland. This plan is characterized by the equilibrium of the eastern and western blocks and by the symmetrical and singular placement of the towers which frame the mass formed by the nave and the transept. Under Henry IV renovations and extensions were undertaken. Speyer Cathedral is the first known structure to be built with a gallery that encircles the whole building. The system of arcades added during these renovations was also a first in architectural history.
In its size and the richness of its sculptures, some created by Italian sculptors, it stands out among all contemporary and later Romanesque churches in Germany, and it had a profound influence on the pattern of their ground plans and vaulting.
No less than eight medieval emperors and kings of the Holy Roman Empire of the German Nation from Konrad II to Albrecht of Habsburg in 1309 were laid to rest in its vault. In 1689 the Cathedral was seriously damaged by fire. The reconstruction of the west bays of the nave from 1772 to 1778, as an almost archaeologically exact copy of the original structure, can be regarded as one of the first great achievements of monument preservation in Europe. The westwork, rebuilt from 1854 to 1858 by Heinrich Hübsch on the old foundations, is by contrast, a testimony to Romanticism’s interpretation of the Middle Ages, and as such an independent achievement of the 19th century.
Commissioned by the Bavarian King Ludwig I., the interior was painted in late Nazarene style by the school of Johannes Schraudolph and Josef Schwarzmann from 1846 to 1853.
In 1981, the cathedral was added to the UNESCO World Heritage List of culturally important sites as 'a major monument of Romanesque art in the German Empire'.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.