In 1539, Bernard von Velbrück became Lord of Beaufort through marriage and added the large Renaissance wing with cross-framed windows on top of the medieval walls.
A partisan of the Dutch resistance and the House of Orange, de Heu was captured by the Spaniards, accused of heresy and treason, and publicly executed in Luxembourg's fish market in 1593.
Philip II of Spain confiscated the property and entrusted it to Peter Ernst Graf von Mansfeld, the governor of Luxembourg.
Through marriage, the castle became the property of Henri de Chalon and then Gaspard du Bost-Moulin who had to sell it after being ruined by the Thirty Years War.
In 1893, the new owner Henri Even restored the new building and, in 1928, Edmond Linkels cleared the rubble away and opened the medieval castle to visitors.