Former keep built by Bérenger du Bosc in 1180, it became a medieval fortress with moat and drawbridge, pepper-pot towers, arrow-slits and bombards, until the painter's grandmother, Countess Raymond de Toulouse-Lautrec born Gabrielle d'Imbert du Bosc, decided, in the middle of the 19th century, to turn the austere defensive castle into a welcoming family home, while preserving the Renaissance parts of the building. Even if he died in 1901, the artist is still here through a collection of child's drawings, personal items, posters, lithographs and photographs. This family's castle is also rich in memories, just like the height gauge used to measure all the family members since 1850. The guided tours tell you about the life of his ancestors, famous military aristocrats (all officers in the King's armies), the painter's memories of his childhood and holidays in Bosc until 1900. The monument houses splendid Aubusson tapestries from the 17th century, which represent the achievements of Alexander the Great, as well as 18th century Verdure tapestries and stained-glass grisailles by Sauvage, painter at Marie-Antoinette's Court. The Castle is registered in the Inventory of Historical Monuments. In 2003, its ornamental garden was listed in the General Inventory of Cultural Heritage : it counts in particular two remarkable tree species from Aveyron that you can discover while strolling in the park. Average length of guided tours : 1h / Last visit : 1h before closing. Hiking from the castle – 1h