Sulejów Abbey was a Cistercian abbey founded in 1176 by the duke Kazimierz II the Just. The town of Sulejów grew up round it. The most notable parts of the abbey are the Romanesque church of Saint Thomas Becket of Canterbury and Romanesque fortifications which stopped the Mongol Hordes in the 13th century.
The monastery was dissolved in 1810. After many years of industrial and business use the surviving buildings are now used by the present parish.
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.