Alt-Wartburg Castle was built around c. 1200 by the lords of Ifenthal. It was significanly extended in 1325. In the mid-14th century Alt-Wartburg became the property of the Büttikon family and later Hallwyler family. When the Confederates conquered Aargau in 1415, Bernese troops burned down the castle. Alt-Wartburg was left ruined.
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.