The Royal Coin Cabinet is a museum dedicated to the history of money. The museum includes exhibitions of coins, banknotes (the first in the world was issued in 1661 by Stockholms Banco), treasure hoards and piggy banks. Particularly notable are the oldest Swedish coin, a copper plate coin dating from Queen Christina's reign in 1644 that is thought at 19.7 kg to be the heaviest in the world, some of the Lohe treasure found in 1937 on Gamla Stan, Weimar Republic inflation currency and some Nobel prize medals.
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.