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Fortress and Castle Jülich

In North Rhine-Westphalia, the Citadel and Jülich Castle form a fortress complex, considered one of Germany's best-preserved bastioned fortresses. As the oldest citadel north of the Alps and the earliest example of a princely residence within an impregnable fortress in the German-speaking world, known as a Palazzo in fortezza, it is a testament to the High Renaissance.
History+
The complex was conceived after 1545 as an integral part of an ideal Renaissance city. The Italian master builder Alessandro Pasqualini designed the citadel and the ducal residential castle within it, the foundation stone of which was laid in 1549. Construction work continued until around 1580. The four-pointed fortress, with a perimeter of approximately 1200 meters and a moat up to 30 meters wide, was a masterpiece of military architecture. In the 17th century, an upper wall system was added to improve defenses. The citadel withstood numerous sieges and alterations but suffered significant damage in World War II.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=570
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 50.9256, 6.3601