Situated on the Via Podensis, one of the routes to Santiago de Compostela, this castle has a very long history: it is first mentioned as early as the 12th century, and a fortress certainly existed there before that.
In 1764, the Château de Saint-Alban became one of the rallying points for organising the hunts aimed at eliminating the Beast of Gévaudan.
The castle became a psychiatric hospital in 1821, with the arrival of Joseph Tissot, known as Brother Hilarion, whose vocation was to care for the mentally ill. The hospital was renowned for the quality of its care. The castle is currently closed for restoration work. The interior of the château is not open to the public.