Corseul was called Fanum Martis ('Temple of Mars') in Latin and was the capital of the Gallo-Roman province of Coriosolites. It was founded in 10 BC. In the 3rd and 4th centuries, like many other cities, Fanum Martis was renamed for its people, the Curiosolitae. This name change occurred as the Roman Empire weakened and paralleled a revival of the ancient Gallic gods in local religious sculptures and dedicatory inscriptions.
Monterfil, today in Corseul city centre, was the antic city’s trading area and was built on a Roman grid plan. It was laid out around a 10m wide central street and two main perpendicular lanes delineating the blocks or insulae. It was developed in the 1st century BC and remained active until the 3rd century AD when it was burnt. The site has been transformed into an elegant public garden known as Jardin des Antiques.
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.