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Origin and history

Castelfranc Castle is located in the commune of Montredon-Labessonnié, in the department of Tarn, in the Occitanie region. Today, the original building remains only the viewpoint, erected in 1610, as well as a square tower serving as an observatory. The latter was the first of its kind in France, built on the initiative of William de Nautonier, geographer of King Henry IV, who made it a place dedicated to astronomy.

The castle had a turbulent history: looted and destroyed in 1628, it was rebuilt in 1835 by the family of Solages, which incorporated architectural elements used from Toulouse buildings. The Solages, then their heirs, the family of Pierre de Bernis, kept the estate until its partial inscription in the historical monuments in 1993, covering the facade, the gazebo, orangery and chapel.

The architecture of the castle blends medieval traces, like a wooden gallery evoking the hurdles, with 19th century additions. The site, although partially extinct, bears witness to both the scientific scholarship of the Renaissance and the architectural transformations associated with family heritages under the monarchy and later modern times.

The castle also illustrates artistic re-use practices in the 19th century, where carved or architectural fragments from other monuments – notably Toulouse – were integrated into reconstruction. This approach reflects a desire for prestige and perpetuation of a local heritage, while adapting the building to the tastes of the era.

Finally, the 1993 inscription highlights the heritage value of the preserved remains, including the observatory, a symbol of the scientific advances of the seventeenth century, and the decorative elements inherited from the Solages. Castelfranc Castle remains a witness to both the astronomical history of France and the architectural changes associated with the local dynasties.

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