It was one of the most impressive fortifications of the Late Middle Ages. Despite such features as early casemates that made it nearly unassailable, the castle ceased to be the ducal seat in 1567 and fell into disrepair.[2] During the Thirty Years' War (1618–48), it was taken over by the Tyrolean line of the Habsburgs following the death of the last member of the Lichtenstein family in 1687 during the Great Turkish War.[6] The coat of arms of their family, a pair of golden angel wings on a blue background, is still displayed in the Great Hall of the castle.