Great Colonnade at Apamea was the main colonnaded avenue of the ancient city of Apamea in the Orontes River valley in northwestern Syria . It was built in the second century CE after Apamea 's devastation in the 115 earthquake . The avenue , which runs for nearly , made up the city 's north-south axis , or the '' cardo maximus '' . The monumental colonnade is among the longest and most famous in the Roman world
115 earthquake
115 Antioch earthquake
Great Colonnade at Apamea