Built in 1911 on the shores of Lake Aureilhan by Hugh Grosvenor, 2nd Duke of Westminster, it is a replica in the Tudor style of the home of Rudyard Kipling - the author of The Jungle Book.

[2] Shortly after this first visit the Duke purchased a wooded area of over 10 hectares on the banks of Lake Aureilhan to build a hunting lodge.

This area was also occupied by the staff who organised hunting parties, the steward, the head housekeeper, the dog handlers, the mule-drivers, the chauffeur, and the Duke's friends.

[2] In her memoirs, Loelia Ponsonby, the third wife of the Duke, wrote about Woolsack: "There I cut down trees to reveal the view of the lake, I arranged the steps to go down to the water".

Winston Churchill, who had been an intimate friend of the Duke since the Boer War, made frequent visits to Woolsack - alone or with his family.

Wild boar and deer are present in excellent areas for the chasse à courre (hunting with hounds) which is the reason for the chateau.

When the couple were about to come for a honeymoon in Woolsack, the house caught fire on the night of 23 February 1947 and a large part was burnt.