Salzburg's Old Town (Altstadt) is internationally renowned for its baroque architecture and is one of the best-preserved city centers north of the Alps. It was listed as a UNESCO World Heritage Site in 1997.
Salzburg is an outstanding example of an ecclesiastical city-state, peculiar to the Holy Roman Empire, from Prussia to Italy. Most disappeared as political and administrative units in the early 19th century and adopted alternative trajectories of development. No other example of this type of political organism has survived so completely, preserving its urban fabric and individual buildings to such a remarkable degree as Salzburg.
Salzburg is the point where the Italian and German cultures met and which played a crucial role in the exchanges between these two cultures. The result is a Baroque town that has emerged intact from history, and exceptional material testimony of a particular culture and period. The centre of Salzburg owes much of its Baroque appearance to the Italian architects Vincenzo Scamozzi and Santino Solari.
The Salzburg skyline, against a backdrop of mountains, is characterized by its profusion of spires and domes, dominated by the fortress of HohenSalzburg. It contains a number of buildings, both secular and ecclesiastical, of very high quality from periods ranging from the late Middle Ages to the 20th Century. There is a clear separation, visible on the ground and on the map, between the lands of the Prince-Archbishops and those of the burghers. The former is characterized by its monumental buildings - the Cathedral, the Residence, the Franciscan Abbey, the Abbey of St Peter - and its open spaces, the Domplatz in particular. The burghers' houses, by contrast, are on small plots and front onto narrow streets, with the only open spaces provided by the three historic markets. Salzburg is rich in buildings from the Gothic period onwards, which combine to create a townscape and urban fabric of great individuality and beauty.
Salzburg is also intimately associated with many important artists and musicians, preeminent among them Wolfgang Amadeus Mozart.
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.