Cairns Castle is a ruined keep, dating from the 15th century. The Crichtons inherited the castle through marriage of the heiress of the castle who was the granddaughter of William de Carnys the original owner.
The castle has an adjoining wing. It has a vaulted basement, a kitchen on the ground floor, and a hall above. All floors were reached by a turnpike stair in the corner between the main block and the wing. There were at least three storeys. The kitchen fireplace was converted into an entrance. The entrance tower to the east no longer exists.
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.