The Château de Bilstein is a castle ruin in the municipality of Riquewihr. The origin of the castle dates from the 12th century, with additional building work done in the 14th century. The castle was destroyed in 1636.
The ruin is near to that of another castle ruin, Château de Reichenstein, both popular hiking destinations. The ruin of Chateau de Bilstein lies just off GR 5.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.