Paimpont Abbey was originally built by the King of Dumnonia in the 7th century, probably around 630 AD. It was destroyed by Vikings in the 9th century. The construction of current abbey building was started in 1199. The present buildings are works from the 11th, 13th, 15th and 17th century. Paimpont Abbey was closed down during the Great Revolution in 1790, but several buildings have survived. The Abbey is home to many fine treasures, like a statue of Our Lady of Paimpont, the golden reliquary hand of Saint Judicael and a carved ivory Christ.
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.