Grimbergen Abbey is a Premonstratensian monastery established in 1128 in the place of an earlier foundation of Augustinian Canons.
The abbey itself was dissolved in 1796 in the aftermath of the French Revolution, but the abbey church of Saint Servatius survived as the parish church of Grimbergen. After the French Revolution the abbey was reinstated. The building in its present form dates from 1660 and is considered one of the most beautiful and best-integrated Baroque churches in the Low Countries. It was elevated to the status of basilica minor in 1999.
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.