Johannisborg was fortress built by John, Duke of Östergötland, between 1614 and 1639. It was purposed to protect Norrköping increasing clothing and weapon factories. In 1719 Russian army destroyed the fortress in the Great Northern War and only one tower and some walls survived.
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.