Ravnsborg Castle was built in around 1330 by John III, Count of Holstein-Plön. In 1347 the castle was conquered by Valdemar IV. It was demolished in 1510. The 100m long and 50m wide castle was originally on an island and fortified with brick walls.
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.