Strategically built on a hill which dominates the valleys of the Adour and the Arros, it allowed the d'Armagnac family to keep watch over the frontiers of the province of Armagnac.
[2] Its most famous inhabitant was the founder's son, Thibault d'Armagnac, who fought alongside Joan of Arc.
[2] The castle belonged to the Armagnac-Termes family until the French Revolution, when it was declared a national asset and sold.
The keep became overgrown until it was bought by the commune in the 1960s and, under the Association du Pays vert de d’Artagnan, restored and turned into a museum.
[2] Classed as a monument historique (historic monument) by the French Ministry of Culture in 1962,[1] the tower now houses a museum of Gascon life with exhibits on regional history and culture.