The late antiquity and medieval Palmatis fortress is placed at the east end of Onogur village. The Roman road between Durostorum and Marcianopolis used to pass nearby. The fortress is situated on a high plateau, lowering down to the northeast towards the dry valley. The Early-Christian basilica from the time of Emperor Justian the Great has been revealed in Palmatis fortress.
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.