Dalheim Ricciacum is the site of a well-preserved Gallo-Roman theatre dating from the 2nd century AD. The site was first excavated by the Société Archéologique around 1850 under Antoine Namur (1812–1828). Thousands of objects were discovered, registered and described in three reports.
It appears that the settlement grew considerably until by the 3rd century it covered an area of about 25 hectares. In addition to the theatre there were private houses and large public buildings including a hostel, several temples and baths. There were also two large cemeteries. The findings indicate the population consisted of artisans and merchants. One of the more important finds was a magnificent temple measuring 28 by 19 metres. It dates from Emperor Hadrian's reign, about 130 AD.
The eagle monument commemorates the old Roman town Ricciacum and is also the symbol of Dalheim. The huge stone blocks forming the solid base of the monument were excavated in the 19th century, not far from their present location. The blocks no doubt date back to Roman times (middle of the 3rd century). They may have been removed from the Roman theatre in order to serve as the foundations of a burgus or defensive watchtower. The monument itself was built by the Archaeological Society of Luxembourg. On 28 May 1855, the groundbreaking ceremony was held in the presence of William III of the Netherlands who was also Grand Duke of Luxembourg. The memorial commemorates the presence of the Romans on Dalheim's Petzel plateau. Standing on a globe, the eagle seems to be looking in the direction of Trier while its body is facing Metz, symbolizing the old road from Metz to Trier.
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.