Montmayeur Castle was built in 1271 by Anselmo and Aimone D´Avise on a steep promontory over the orographic right bank of the Dora Valgrisenche, in a position dominating the entrance to the valley of the same name.
Today it is reduce to ruins, but preserves the cylindrical tower, crowned with beautiful swallowtail battlements. It is still possible to see the remains of the ancient castle and the boundary wall.
Access is only possible on foot, along the path that leaves from the village of Grand Haury, just above Arvier.
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.