The Château de Luc was built in the 12th century on a previous Celtic site. The castle, as a strategic point between the two provinces of Gévaudan and Vivarais, guarded a link to the south of France of the Auvergne frequently used by pilgrims of Saint Gilles, also known as the Regordane Way, on which it was a toll-gate.
For the first 100 years or so of its existence it was the home of the Luc family. In the 13th century it became the property of other regional seigneurs. During the Hundred Years' War it withstood a number of sieges. During the 16th century Wars of Religion the state of Gévaudan garrisoned the castle. Around 1630 the castle was dismantled under orders of Richelieu. During the period surrounding the French Revolution it continued to fall apart from neglect.
It remains in ruins today and attracts hikers who re-trace Stevenson's route on the GR 70.
References:Saint-Émilion is a picturesque medieval village renowned for its well-preserved architecture and vineyards. The town and surrounding vineyards was made a UNESCO World Heritage Site in 1999, owing to its long, living history of wine-making, Romanesque churches and ruins stretching all along steep and narrow streets.
An oppidum was built on the hill overlooking the present-day city in Gaulish times, before the regions was annexed by Augustus in 27 BC. The Romans planted vineyards in what was to become Saint-Émilion as early as the 2nd century. In the 4th century, the Latin poet Ausonius lauded the fruit of the bountiful vine.
Because the region was located on the route of the Camino de Santiago, many monasteries and churches were built during the Middle Ages, and in 1199, while under Plantagenet rule, the town was granted full rights.