Around 516, Saint Einion, king of Llyn, invited the Breton Saint Cadfan to move to the Bardsey Island from his first residence in Tywyn. Under Cadfan's guidance, St Mary's Abbey was built. In 1188, the abbey was still a local institution but, by 1212, it belonged to the Canons Regular. Many people still walk the journey to Aberdaron and Uwchmynydd each year in the footsteps of the saints, although today only ruins of the old abbey's 13th century bell tower remain. A Celtic cross amidst the ruins commemorates the 20,000 saints reputed to be buried on the island.
The Dissolution of the Lesser Monasteries Act of 1536, on the orders of Henry VIII, resulted in St Mary's Abbey being dissolved and its buildings demolished in 1537.
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.