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:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.