The remains of the fortress can be visited
Château de Bock

The Château de Bock, a historic castle complex, stands majestically on the distinctive Bock Promontory in the city of Luxembourg. Its significance lies in its role as the birthplace of the present-day city and the Grand Duchy of Luxembourg, whose origins can be traced back to the 10th century.
History+
The history of the site began in 963 when Count Siegfried of the Ardennes acquired the Bock Promontory through an exchange with St. Maximin's Abbey in Trier. A document from that period mentions a fortified structure, a “Castellum,” as well as an earthen rampart and a palisade. For a long time, it was assumed that Siegfried had taken over an already existing, fully developed defensive complex. However, archaeological excavations in the early 1990s revealed that a Roman military installation had already existed on the Bock Promontory by the end of the 3rd century, which was expanded between the 4th and 6th centuries and housed a garrison. The name “Lucilinburhuc” is now interpreted more as “fortified rock outcrop” rather than “small castle,” as previously believed. The designation “burgus Lucelenburgensis” or “opidum et castrum Luxelenburgensis” first appeared in 1225.
Location+
The castle ruins are located in the city of Luxembourg, in the Canton of Luxembourg, in the Grand Duchy of Luxembourg, at an elevation of approximately 261 m above sea level.
On site+
Today, the remains of the fortress are accessible and can be visited by the public.
Nearby+
- Palais Grand-Ducal (Grand Ducal Palace) (Residence), approx. 0.3 km away
- Fort Thüngen (Fortress), approx. 0.4 km away
- Château de Septfontaines (Castle), approx. 2.8 km away
- Château de Dommeldange (Castle), approx. 2.9 km away
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Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Bockfelsen_Luxemburg.jpg?uselang=de
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: 49.6115, 6.1364