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.
References:The Jan Hus Memorial stands at one end of Old Town Square. The huge monument depicts victorious Hussite warriors and Protestants who were forced into exile 200 years after Hus, and a young mother who symbolises national rebirth. The monument was so large that the sculptor designed and built his own villa and studio where the work could be carried out. It was unveiled in 1915 to commemorate the 500th anniversary of Jan Hus' martyrdom. The memorial was designed by Ladislav Šaloun and paid for solely by public donations.
Born in 1369, Hus became an influential religious thinker, philosopher, and reformer in Prague. He was a key predecessor to the Protestant movement of the sixteenth century. In his works he criticized religious moral decay of the Catholic Church. Accordingly, the Czech patriot Hus believed that mass should be given in the vernacular, or local language, rather than in Latin. He was inspired by the teachings of John Wycliffe.