La Fontaine Castle

La Fontaine Castle was a castle in Clausen, Luxembourg. The elaborate building was the residence of Peter Ernst I von Mansfeld-Vorderort, governor of Luxembourg, who began its construction in 1563 and continued to extend it until his death in 1604. For this reason, it is also known as the Palais Mansfeld or Mansfeld Palace. Almost nothing remains of it at present.

Source: Wikipedia