Ilburg, Medieval castle ruin on Großer Burgberg in Harztor, Germany.
Ilburg is a castle ruin perched on Großer Burgberg in Harztor at approximately 300 meters elevation. The site preserves wall sections, foundation remains, and a restored well from the medieval structure.
The fortress was built between 1065 and 1068 by King Henry IV of the Salian dynasty as a strategic stronghold. It was demolished in 1651 following a royal command.
The castle ruins stand as evidence of medieval German defensive architecture, reflecting the building methods and military strategies of the high middle ages.
The site is accessible throughout the year, but the terrain features uneven paths covered with vegetation that require sturdy hiking footwear. Weather conditions can make the routes slippery, so extra caution is wise.
During the Saxon Revolt of 1073, King Henry IV used a hidden passage connected to the castle well to make his escape to safety. The site once held a royal chapel and burial chamber.
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