Wildenburg castle was founded in the 13th century by the Lords of Hünenberg, vassals of the counts of Kyburg and Habsburg. The first plant was probably just a stone ring wall with wooden buildings. A round keep and a palas in the northeastern corner were added later. In 1386, the knights of Hünenberg fought against the Confederates at the Battle of Sempach on the side of Habsburg Austria. Wildenburg was destroyed after that. The castle was then left to decay and used as a quarry in the 16th century.
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