Château de Castelbon, Medieval castle in Betchat, France

Château de Castelbon is a medieval castle near Betchat with a U-shaped layout marked by four towers at its corners. The structure combines two square and two round defensive towers that form a fortified building from the 14th century.

Roger de Comminges became Lord of Castelbon in 1394, marking the beginning of documented noble rule over the castle. This period established the importance of noble control and the strategic value of the fortification in the region.

The name Castelbon comes from the Occitan for "good castle", and the seigneurie was held by vassals of the Count of Comminges; Raimond At de Castelbon died in 1211 at the first siege of Toulouse. The building later passed by marriage: in 1490 Isabelle de Comminges brought it as dowry to the Viscount of Joyeuse. Since 2008 occasional cultural events have been held here.

The castle is private property and cannot be visited from inside, but its outer structure is visible from the nearby RD 35 road. From this public route, visitors can observe the architecture and towers from outside.

In 1953 the castle was converted into a model farm under Gilbert Tocanier before changing hands several times afterward. This transformation shows how the medieval fortress became a modern agricultural operation.