Cool! Visiting Roman ruins in W. Germany was a favorite weekend drive to do when I was stationed there. That was one of the best things about having military topographical maps because they were well-marked on them.
The road was discovered as workers dug to install security barriers to secure the city's annual Christmas market.
So the road's discovery is owed to Islamic terrorism.
Aachen was later Charlemagne’s capital and the ceremonial capital of the Holy Roman Empire for the better part of a millennium.