Château de Montguyon, a powerful castle since the 11th century, was first mentioned in 1080. In 1404, Rosine de Montaut-Mussidan brought it as dowry to Guy II de La Rochefoucauld, and the La Rochefoucauld family owned it until its sale in 1683. The fortress played a role in history, such as being liberated by Dunois after the Battle of Montguyon in 1451. It served as a Protestant stronghold during the Wars of Religion and hosted notable figures like Henri de Navarre (future Henri IV) between 1571 and 1586. In 1621, King Louis XIII and Anne d'Autriche stayed at the castle.
In 1683, Pélagie de Rohan-Chabot acquired the barony, and it remained in the Rohan family's possession until the French Revolution. Struck by lightning in 1793, the castle became a ruin sold as national property.
Built on a rocky spur with remnants of a drawbridge, Montguyon Castle consists of a main building and a tower from the 13th century, modified in the 14th century. Originally reaching a height of 50 meters, the tower now remains in ruins after the 1793 fire. A section of the keep collapsed in 1982 due to an earthquake. Inscriptions of maxims have been discovered on the walls of the second floor.
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.