The
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 ran 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.